The invention relates to a lawn falling leaf automatic cleaning device. The lawn falling leaf automatic cleaning device comprises a falling leaf collection system, a crushing system, a vehicle and anintelligent control system, wherein the falling leaf collection system comprises a needle barb shaft group, a comb tooth shaft group, a collection cover, a corrugated cover, a first support rod, a first swing arm rod, a first motor, a second motor, a second swing arm rod, a second support rod and a transverse rod; the crushing system comprises a fourth motor and two sets of rolling knife shafts; the vehicle comprises a power motor, a battery group, wheels, a steering execution mechanism and a cargo box; the intelligent control system comprises a camera, a control unit, a GPS (global positioning system) module, a GSM (global system for mobile communications) module and a monitoring module. The lawn falling leaf automatic cleaning device has the advantages that the falling leaves are punctured by needles with barbs, and are recycled into the cargo box through the comb tooth structure, so that the structure is simple, and little power is consumed; the falling leaves are crushed by the crushing device, so that the falling leaves can be conveniently collected and utilized; the unmanned management is realized by an image processing intelligent control type; the structure is simple, the working efficiency is high, and the intelligence degree is high.