Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” and to the use of our report dated March 6, 2014, in Amendment No. 3 to the Registration Statement (Form F-1 No. 333-194996) and related Prospectus of Cheetah Mobile Inc. dated May 5, 2014 for the registration of its Class A ordinary shares.