An impact angle continuously adjustable low-speed impact test clamp comprises a clamp upper clamping plate, a planar rotation angle scale, a test piece fixing plate, a top plate, a pointer, a centringtriangular block, a rotating shaft, an elevation angle scale, a baffle, a square-head supporting column, a connecting shaft, a bulletheaded supporting column, an upper fixing nut, a lower fixing nut,a supporting bottom plate, a laser emitter, a supporting cylinder and a fixing plate. The impact angle continuously adjustable low-speed impact test clamp provided by the present invention can adjustmultiple angles of a test piece continuously, and can realize the planar rotation of multiple directions of the test piece, so that on the condition of not changing an original impact mode, and by aspecial mechanical structure, the impact angle continuously adjustable low-speed impact test clamp satisfies the impact demands of different angles and directions, is low in cost, simple in structure,strong in transportability and small in floor space, is easy to operate, enables the cost for manufacturing the test clamps of different angles to be reduced substantially, and can supplement or substitute for the conventional test equipment in function to reach the test demands.