Exhibit 23.4

April 22, 2019

So-Young International Inc.

3/F, Wangjing SOHO-Tower 3A

Chaoyang District, Beijing, 100102

People’s Republic of China

Dear Sir or Madam:

Pursuant to Rule 438 under the Securities Act of 1933, as amended, I hereby consent to the references to my name in the Registration Statement on Form F-1 (the “Registration Statement”) of So-Young International Inc. (the “Company”) and any amendments thereto, which indicate that I have accepted the nomination to become a director of the Company. I further agree that immediately upon the United States Securities and Exchange Commission’s declaration of effectiveness of the Registration Statement, I will serve as a member of the board of directors of the Company.

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Sincerely yours,

/s/ Charles Zhaoxuan Yang

Name: Charles Zhaoxuan Yang

[Signature Page to Consent of Independent Director]