Adjustable car roof

The utility model discloses an adjustable car roof which comprises a car roof plate, the left side of the car roof plate is connected with a first connecting plate, the right side of the car roof plate is symmetrically connected with a second connecting plate, a maintenance door plate is arranged on the top of the car roof plate in a penetrating mode, and the car roof plate comprises a left roof plate, a right roof plate, a rear roof plate and a front roof plate. The rear top plate is arranged on the rear sides of the left top plate and the right top plate, the top plate, the right top plate, the rear top plate and the front top plate are of a split structure, the positions of the left top plate, the right top plate, the rear top plate and the front top plate can be flexibly adjusted, and the area of the top of the car top plate can be enlarged to be suitable for being equal to the size of guardrails not to be installed on the car top. The application range and the adjusting flexibility are greatly improved,