The invention discloses a vehicle-mounted ceilometer chamber which comprises a ceilometer chamber body, a chamber door, a chamber door inclined strut, a slide rail, a retractable platform, a circular turntable, turntable bolts, a locking bolt and the like. The complete equipment is used for fixing and supporting a ceilometer during transportation and detection work and is placed in a ceilometer chamber formed in a detection vehicle. The chamber door is opened and placed in a horizontal direction through the chamber door inclined strut, the turntable bolts are loosened, the locking bolt is taken out, the ceilometer, together with the retractable platform and the circular turntable, is pulled onto the chamber door through the slide rail, the locking bolt is screwed, the turntable bolts are rotated into circular holes in the retractable platform, and the ceilometer enters into a working state. According to the invention, the ceilometer is fixed in a special chamber, damage caused by external force during transportation is avoided, and the ceilometer can be directly taken out and placed on a vehicle to carry out cloud base height detection without being carried to the ground and can be rotate in different directions to perform cloud base height detection in different directions. The vehicle-mounted ceilometer chamber has the advantages of compact and reasonable integral design, simple structure, low cost, convenience in use and firmness in fixation.