Multi-function farm tricycle

The utility model discloses a multifunctional agricultural tricycle. A cross beam is arranged in the position between a front fork of the tricycle and a back wagon box of the tricycle, an iron plate is fixed on the cross beam, and a water pump or a drug pump can be conveniently fixed on the iron plate. A grinding wheel or a circular saw blade is fixed on a power input shaft of the water pump. A liquid container which can be fixed on the wagon box is connected with an intake value of an engine through a flexible pipe, a float switch and a three-way valve. The utility model can realizes the functions of sprinkling, spraying pesticide, sawing wood, sanding and conveying liquid, and therefore, the purposes of one machine with multiple functions and economy and utility are reached.