Cab ceiling

The utility model belongs to the technical field of tractor accessories, and relates to a cab ceiling which comprises a supporting plate and a lining plate arranged on the supporting plate, and an air conditioner avoiding area protruding upwards is arranged on the supporting plate. The supporting plate is of a double-layer structure with a cavity in the middle and comprises a lower side wall and an upper side wall, and the cavity is formed between the lower side wall and the upper side wall. A cavity in the middle of the supporting plate is filled with a thermal insulation material; the supporting plate is of an integrally-formed structure. A plurality of first reinforcing parts which are arranged at intervals and protrude are arranged on the upper side wall; the first reinforcing part is in a long strip shape and extends in the front-back direction. The air conditioner avoiding area is located in the middle of the supporting plate. The front side and the rear side of the air conditioner avoiding area are eac