The invention discloses a lifting lug structure of a corrugated tank. The lifting lug structure comprises a corrugated tank body, and lifting lugs arranged on the corrugated tank body, wherein the four lifting lugs are arranged on an inner wall of the corrugated tank body and located on four vertical edges of the corrugated tank body; the lifting lugs are of a C-shaped structure; each lifting lugcomprises parallel long longitudinal plate and short longitudinal plate, and a transverse plate connected with the long longitudinal plate and the short longitudinal plate; each short longitudinal plate is welded on the inner wall of the long side surface of the corrugated tank body; and each transverse plate is welded on the inner wall of the short side surface of the corrugated tank body. According to the lifting lug structure of the corrugated tank, the C-shaped lifting lugs are welded on the surface of the inner wall of the corrugated tank, so that a user can carry out lifting operation onthe corrugated tank through the long longitudinal plates extending from the lifting lugs; when the corrugated tank is located in an installation state, the user cannot use the lifting lugs of the corrugated tank, so that nonstandard operation of lifting an overall transformer by using the lifting lugs of the corrugated tank is avoided at the source and a hidden danger of an accident when the corrugated tank is used is reduced.