The invention provides a ceiling spotlight with precise positioning of a gear. The ceiling spotlight comprises a lamp body, a lamp bead, a rotating assembly, an outer cylinder and an angle adjusting assembly. The lamp bead is mounted inside the lamp body, and the lamp body is assembled at the right end of the angle adjusting assembly. The angle adjusting assembly is mounted inside the outer cylinder, and the rotating assembly is mounted at the left end of the outer cylinder. The rotating assembly comprises an inner cylinder, annular sliding blocks, annular sliding grooves, a pulling rope, guiding wheels, a snap ring, springs, connecting columns, a bracket, a first micro motor, a fixing plate, a first rotating shaft and a connecting frame, and the angle adjusting assembly comprises an arc-shaped sliding block, an arc-shaped sliding groove, a groove, an arc-shaped rack, an arc-shaped through hole, the gear, a second rotating shaft, an opening, a cooling fan and a second micro motor. Compared with the prior art, the ceiling spotlight with precise positioning of the gear has the following beneficial effects that the rotation function is realized, the irradiation range is expanded, theinstallation and disassembly are convenient, the purpose of conveniently adjusting the illuminating angle is achieved, and the adjustment accuracy is high.