Medical Visa Invitation Letter Requirements China: How to Check the Stamp and Seal Before You Travel

According to data from China’s National Health Commission, the country hosted over 300,000 international medical travelers in 2024. Many of those patients arrive with a document that looks official but is not. The medical visa invitation letter requirements China enforce are specific, and the stamp and seal on that letter are the first line of defense against fraud. A fake letter means a rejected visa application at best, and at worst, arriving in Beijing or Shanghai with no hospital expecting you.

Our team at China Medical Services has reviewed hundreds of these letters. We have seen laser-printed forgeries, letters signed by “doctors” who do not exist, and seals that look right but are missing one critical feature. This guide explains exactly what to check.

The Problem: Fake Invitation Letters Are More Common Than Patients Expect

A 2023 report from the Chinese Anti-Fraud Center noted a sharp rise in scams targeting foreign patients seeking treatment in China. The typical scenario: a patient pays a deposit to an online “medical facilitator,” receives a PDF invitation letter within days, and submits it to the Chinese embassy. The embassy checks the letter against hospital records. No match. Visa denied. The facilitator has disappeared.

This happens because the demand for treatment in China is real and growing. Patients from the Middle East, Southeast Asia, and Eastern Europe seek oncology care, cardiac surgery, and orthopedic procedures at hospitals like Fuwai Hospital and Peking Union Medical College Hospital. Scammers know this. They build websites that look legitimate, copy hospital logos, and generate fake letters with impressive-looking stamps.

What does a rejection actually cost you? Application fees, courier charges, and weeks of delay. For a patient with a progressing condition, that delay is the real cost. So the question is not whether you should verify the letter. The question is how.

Why the Stamp and Seal Matter More Than the Signature

In China, the official seal — called a gongzhang — carries legal weight that a signature does not. A contract, a medical record, or an invitation letter without the proper seal is not considered authentic by Chinese authorities. This is a structural difference from Western practice, where a signature on letterhead often suffices.

The Seal Is the Legal Identity of the Hospital

Every licensed hospital in China has a registered seal that is filed with the local Public Security Bureau. The seal is round, red, and bears the hospital’s full legal name in simplified Chinese characters. Some hospitals also have a separate seal for their international department. When an embassy official reviews your invitation letter, they compare the seal impression against the registered sample. A mismatch — even a subtle one in character spacing or font — triggers rejection.

This is why a letter printed in black and white is useless. You cannot verify a seal you cannot see clearly. If your facilitator sends you a grayscale scan, ask for a color original.

Common Forgery Mistakes We See

Most fake letters fail on basic details. The hospital name on the seal does not match the name on the letterhead. The seal is oval instead of round. The seal is blue or black instead of red. The Chinese characters are simplified when they should be traditional, or vice versa. The letter is signed by a “Director of International Patients” — a title that does not exist at most Chinese public hospitals.

But the most common error is simpler: the seal is a stock image. It looks like a seal, but it is a digital graphic pasted onto a Word document. Real seals are pressed onto paper. The impression has slight irregularities — ink density variations, edge blur, paper fiber texture. A perfectly uniform digital seal is a fake.

Medical Visa Invitation Letter Requirements China: The Verification Checklist

So you have a letter in hand. Here is the step-by-step process our team uses to verify authenticity before any patient submits a visa application.

Step 1: Confirm the Letter Comes From a Licensed Hospital

China’s medical system has over 35,000 hospitals, but only a fraction are authorized to host international patients. The letter must come from a hospital with an international medical department. Private clinics, wellness centers, and TCM shops cannot issue valid medical visa invitation letters. If the letterhead says “International Medical Center” but the hospital name is unfamiliar, check the hospital’s registration status on the National Health Commission’s public database.

Step 2: Cross-Check the Seal Against the Hospital’s Official Website

Hospitals in China display their official seal on certain public documents — procurement notices, public announcements, and sometimes on their website footer. Download a sample and compare. Pay attention to the number of characters in the hospital name. A seal with missing or extra characters is a clear fake.

Step 3: Call the Hospital’s International Department Directly

This is the single most reliable verification method. Find the hospital’s phone number on their official website — not the number printed on your invitation letter. Call the international department and ask to confirm the letter’s reference number. Chinese hospital international departments handle these calls routinely. They will tell you within minutes whether the letter is genuine and whether the doctor named on it actually works there.

Step 4: Verify the Visa Category Mentioned on the Letter

A legitimate hospital invitation letter will specify the purpose of your visit: medical treatment. It will not mention business activities, trade, or conferences. The letter should state that you are invited to receive treatment at the named hospital and include your personal details — full name, passport number, and the intended treatment department. If the letter mentions an M visa, it is wrong. Medical travelers apply for an S2 visa. The M visa is for commercial and trade activities only.

How to Check a Chinese Hospital Invitation Letter Stamp: Red Flags to Recognize

Some fakes are sophisticated. Others are not. Here are the red flags that should make you pause before submitting anything to an embassy.

The Letter Arrives Too Quickly

Real hospital invitation letters take time. The hospital must register you in their system, assign a treating department, and generate the letter through their administrative office. This typically takes 3 to 10 business days after the hospital accepts your case. A letter that arrives 24 hours after you first contact a facilitator is almost certainly fake.

The Fee Structure Is Suspicious

Some facilitators charge a “letter issuance fee” of $500 to $2,000. Legitimate hospitals do not charge for the invitation letter itself. You pay for medical services, not for a piece of paper. If someone asks for money specifically to “get you a letter,” walk away.

The Letterhead Contains Errors

Check the hospital’s English name. Chinese hospitals have official English names that follow specific patterns — “Peking Union Medical College Hospital,” not “Beijing Union Hospital.” “West China Hospital of Sichuan University,” not “Sichuan West Hospital.” If the English name reads like a direct translation, it probably is. Compare it against the hospital’s official website.

The Seal Is on the Wrong Position

Chinese official seals are stamped over the date or over the edge of the hospital name — not in the corner like a Western notary stamp. The seal should partially overlap the text. A seal floating in empty space at the bottom of the page is a sign of digital manipulation.

China Medical Visa Invitation Letter Sample: What a Real One Looks Like

We cannot publish a real letter here — patient privacy and hospital policies prevent that. But we can describe the structure clearly.

A genuine invitation letter from a Chinese hospital contains these elements:

• Hospital letterhead — full legal name in Chinese and English, address, and official website
• Letter reference number — a unique identifier that the hospital can look up in their system
• Patient details — full name as it appears on the passport, passport number, date of birth, and nationality
• Treatment details — the department or specialty, the general purpose of the visit, and the expected duration of treatment
• Visa guidance — a statement that the patient should apply for an S2 visa for medical treatment
• Official seal — round, red, overlapping the date or hospital name
• Contact information — the international department’s phone number and email, matching the hospital’s official website

If any of these elements is missing, the letter is incomplete. An incomplete letter is often rejected even if it is genuine.

Is My Chinese Hospital Invitation Letter Real? The Embassy Check

Chinese embassies and consulates have their own verification process. When you submit your visa application, the visa officer checks the invitation letter against a database of registered hospital seals and authorized signatories. If the letter is fake, the embassy will not simply reject the application — they may flag your passport for future scrutiny.

This is why pre-verification matters. You do not want your first verification attempt to happen at the embassy counter. By the time the embassy tells you the letter is fake, you have already paid application fees and lost weeks.

The safer approach: verify the letter before you apply. Call the hospital. Check the seal. Confirm the reference number. Only then submit your application.

Medical Tourism Invitation Letter Verification China: What Happens When You Arrive

Verification does not end at the visa stage. When you arrive at the hospital in China, the international department will check their records. If your letter is genuine, the process is smooth — they already have your file, your treatment plan is in progress, and the bilingual staff are expecting you.

If your letter is fake, you discover it at the worst possible moment. You are in a foreign country, possibly without Chinese language skills, standing at a hospital reception desk with no appointment and no record. The hospital cannot help you. The police may become involved if the letter was used to obtain a visa fraudulently.

This is not a theoretical risk. We have spoken with patients who arrived in Shanghai with letters from “facilitators” who had already deleted their WhatsApp accounts. The patients had paid deposits. They had no hospital appointment. Some had no accommodation booked. The financial and emotional cost was significant.

Practical Considerations: Timing, Documentation, and Language

Beyond the letter itself, there are practical realities you need to handle.

Visa Processing Time

S2 visa processing times vary by country. In most Chinese embassies and consulates, standard processing takes 4 to 10 business days. Express service may be available for an additional fee. You must apply in person or through an authorized visa agency. The invitation letter is one of several required documents — you will also need your passport, a completed visa application form, a recent photo, and proof of financial means.

Documentation You Should Bring

Bring copies of everything: your invitation letter, your medical records, your imaging studies on CD or USB, and your passport. Chinese hospitals often require paper copies of medical records even if you have digital versions. If your records are not in English or Chinese, arrange for certified translation before you travel.

For guidance on which hospitals to consider, our ranked hospital database lists 340+ top-ranked hospitals across 37 cities, including Fudan-ranked institutions and JCI-accredited private facilities.

Language and Communication

Most top-tier Chinese hospitals have English-speaking staff in their international departments. But once you leave that department — to go to radiology, to pay at the cashier, to pick up medication — English disappears quickly. Public hospitals serve thousands of patients daily, and the operational language is Chinese. This is where a bilingual companion changes the experience. We have written about this in detail, and it is worth understanding before you commit to travel.

Payment and Insurance

Chinese public hospitals require prepayment for most procedures. International insurance is accepted at some private hospitals like United Family and Jiahui, which offer direct billing. At public hospitals, you typically pay out of pocket and seek reimbursement from your insurer afterward. Confirm your hospital’s payment policy before you travel. It varies by institution.

Frequently Asked Questions