A trolley type fully-mechanized coal mining hydraulic support assembling frame comprises four assembling unit frames and a trolley mechanism. Each assembling unit frame is provided with a platform trolley, wherein a trolley body rotating device is disposed in the middle of the platform trolley, a trolley body rotating hydraulic cylinder is disposed in the trolley body rotating device, an operation rail is disposed on the platform trolley, slideways are arranged on two sides of the platform trolley, sliders are disposed on the slideways, external square tube standing columns are hinged to the sliders, swing hydraulic cylinders are connected between the external square tube standing columns and the sliders, internal square tube standing columns are nested into the external square tube standing columns, standing column lifting hydraulic cylinders are disposed in the internal square tube standing columns, and lifting sliders are connected to the piston rods of the standing column lifting hydraulic cylinders. The trolley mechanism comprises a longitudinally-moving trolley, a longitudinally-moving traction device and a hoisting trolley. The trolley type fully-mechanized coal mining hydraulic support assembling frame has the advantages that heavy objects are hoisted by the hoisting hydraulic cylinder of the hoisting trolley, assembling or disassembling positions can be controlled optionally, flexible assembling and disassembling are achieved, large hoisting height is achieved, large assembling and disassembling space is achieved, and the assembling frame is applicable to assembling and disassembling of various types of hydraulic supports.