The invention belongs to the technical field of rocket conformal antenna structures, and provides a heat-storage type rocket conformal antenna structure applicable to flight in the hot environment for a long time. The problem that the antenna suffers from heat is solved. The heat-storage type rocket conformal antenna comprises a base (1), a microstrip plate (2), a cover plate (3), an outer surface (4), a mounting surface (5), an inner surface (6), a mounting screw hole (8), an insert (9), a heat storage module (10), a gasket (11), a first square groove (12), a second square groove (13), a third square groove (14), a negative allowance formation gap (15), a conical opening (19), and a microstrip plate and base mounting surface (20), wherein the base (1) and the cover plate (3) are fixedly mounted through a screw penetrating the mounting screw hole (8), the gasket (11) is arranged on the periphery of the screw hole (8), the microstrip plate (2) is arranged at the center of the cover plate (3), and the negative allowance formation gap (15) is arranged between the microstrip plate (2) and the cover plate (3).