The invention provides a cylindrical surface conformal metasurface lens antenna to solve a technical problem that a common conformal antenna is not ideal enough in gain, and relates to the technical field of an antenna. The cylindrical surface conformal metasurface lens antenna comprises a microstrip antenna feed source, a carrier of a cylindrical curved surface structure and a plurality of metasurface lens antenna units arranged on the carrier in an array mode, the microstrip antenna feed source is arranged at a circle center point of the carrier, and the metasurface lens antenna unit is of amulti-layer structure and comprises three dielectric plates and four metal layers. The cylindrical surface conformal metasurface lens antenna is advantaged in that aerodynamic performance of a cylindrical high-speed moving body is satisfied, the high-gain requirement of a cylindrical high-speed moving body for the antenna system is satisfied, and the high gain is realized.