Assembly type building wall connecting device convenient to disassemble and assemble

The assembly type building wall connecting device convenient to disassemble and assemble comprises a connecting body and a control assembly, a sliding rod is transversely and vertically arranged in the middle of the left side of the connecting body, a fixing block is fixedly installed at the tail end of the sliding rod, and supporting springs are vertically installed at the upper end and the lower end of the fixing block; a first clamping plate is fixedly installed at the top of the supporting spring, the control assembly used for controlling the first clamping plate to move is installed in the middle of the fixing block, the control assembly comprises a two-way threaded rod, a limiting block, a sliding column, a limiting rod, a rotating block and an inner hexagonal groove, and the limiting block is arranged in the middle of the two-way threaded rod. The tail end of the bidirectional threaded rod is of a hollow structure, a sliding column is slidably arranged on the inner wall of the tail end of the bidirecti