The invention provides a chiseling trolley and relates to a construction device for concrete structure chiseling. The chiseling trolley is designed mainly to solve the problem that at present, mechanical work cannot be conducted on curved surfaces or cantilevers. The trolley comprises a front main truss supporting leg connection rod and a rear main truss supporting leg connection rod which are connected through main truss lower connection rods; the front main truss supporting leg connection rod is provided with front main truss supporting legs, the rear main truss supporting leg connection rod is provided with rear main truss supporting legs, the front main truss supporting legs and the rear main truss supporting legs are internally provided with front main truss adjusting legs and rear main truss adjusting legs respectively, and bolt holes are formed in the front and rear main truss adjusting legs and in the front and rear main truss supporting legs; a main truss front beam and a rear truss rear beam are connected with the front main truss adjusting legs and the rear main truss adjusting legs respectively, main truss upper connection rods are arranged between the main truss front beam and the main truss rear beam, the main truss front beam and the main truss rear beam are internally provided with a front cantilever and a rear cantilever respectively, and bolt holes are formed in the front cantilever, the rear cantilever, the main truss front beam and the main truss rear beam; a cantilever connection beam is arranged on the front and rear cantilevers, a pulley is arranged on the cantilever connection beam, and a handheld chiseling machine is hung on a guide chain; a water tank is disposed on a water tank fixing rack on the main truss rear beam. The chiseling trolley has the advantage of being capable of achieving semi-mechanical work on the curve surfaces and the cantilevers.