Unmanned aerial vehicle rocket booster capable of adjusting thrust

The utility model discloses an unmanned aerial vehicle rocket booster capable of adjusting thrust, which comprises a combustion chamber main body, a head part arranged at one end of the combustion chamber main body, a connecting table arranged on the head part, a tail part arranged at the other end of the combustion chamber main body and a spray pipe arranged on the tail part, the head part is connected with the connecting end through a first connecting part, the tail part is connected with the connecting end through a second connecting part, and threaded connecting mechanisms matched with the head part, the tail part and the connecting end are arranged in the first connecting part and the second connecting part. The connecting end, the head portion and the tail portion can be conveniently mounted and dismounted, then propellant grains in the combustion chamber body can be conveniently mounted and dismounted, the propellant grains located on the same radius can be conveniently and integrally dismounted throug