Clamping type junction box

The invention belongs to the technical field of electrical devices, and particularly relates to a clamping type junction box. An installation assembly comprises a fixed body and a movable body. A bottom end of the movable body can be clamped in the fixed body through an elastic element to form detachable connection, a height of the fixed body is very small, wiring operation is not influenced at all, and hidden danger that an installation column is damaged in an earlier stage and a problem explodes in later long-term use can be avoided. And during later disassembly and maintenance, the movablebody can be disassembled firstly and then operated so that the installation assembly is prevented from being damaged. Even if the movable body is cracked and slipped in the long-term use process, themovable body can be replaced very conveniently and directly; and construction wastes generated by digging a wall body are not generated, disorder of circuits in the junction box does not happen, the movable body is small in si