The invention discloses a hydrostatic transmission forklift chassis and a three-wheel forklift equipped with same. The hydrostatic transmission forklift chassis comprises a front axle, a rear axle anda forklift frame, wherein a two-wheel integrated forklift axle serves as the front axle; a single-wheel forklift axle serves as the rear axle; one side of the front end of the forklift frame is hinged with the front axle through a pin shaft; the other side of the front end of the forklift frame is hinged with a forklift frame adjustment oil cylinder; the other end of the forklift frame adjustmentoil cylinder is hinged with the front axle; and the rear end of the forklift frame is in rigid connection with the rear axle. The turning radius of the hydrostatic transmission forklift chassis is relatively small, so that the hydrostatic transmission forklift chassis can be operated in a narrow and small space, is high in use flexibility, can be applied to the contianer devanning operation, andis good in off-road property; during the use of the three-wheel forklift on a cross slope, the telescopic length of the forklift frame adjustment oil cylinder can be adjusted in real time according tothe size of the cross slope; accordingly, the posture of a forklift body can be adjusted and a cab can be kept horizontal; and the environmental adaptive capacity of the three-wheel forklift is strong.