The utility model discloses a car roof with fire -retardant interlayer, including car and dead lever, the upper end of car middle part is connected with the ceiling, and the internally mounted of ceiling has to separate and fire the layer, servo motor is installed to the left end of ceiling upper surface, and servo motor's top is connected with winding axle, the outside of winding axle is connected with the stay cord, and the end -to -end connection of stay cord has the gim peg. The utility model discloses the fixed axle that sets up can pass through the slip of slider in the slide rail, thereby make and slide each other between fixed axle and the ceiling, the water jet pump who just so enables to install in the fixed axle sprays in the ceiling what the coolant liquid moved in circles, andthen can reduce the temperature of ceiling, just so can reduce the inside temperature of car, avoid the car problem of spontaneous combustion to appear, the stay cord right -hand member is installedon the gyro wheel, so as to passes through the stay cord can drive the gyro wheel rotation, the dead lever can be to pivoted gyro wheel played a supporting role, this kind of car roof with fire -retardant interlayer's practicality is greatly improved.