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Exhibit 15.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No.333-232109 and No. 333-259708) of So-Young International Inc. of our report dated May 2, 2022 relating to the financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20-F.

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