The invention discloses a self-propelled miniature rotary cultivator. A main plate is arranged in the middle of the whole device, two handles are arranged on the rear side of the upper surface of themain plate, a connecting rod is arranged at the middle sections of the two handles, a supporting plate is arranged on the rear side of the connecting rod, a hydraulic valve is arranged on the upper side of the supporting plate, rocking bars are arranged at the top of the hydraulic valve, an oil tank is arranged in the middle of the upper side of the main plate, an engine is arranged on the front side of the oil tank, and a hydraulic pump is arranged on the left side of the engine; a fixing base is arranged on the front side of the engine, a connection shaft is arranged at the bottom of the fixing base, a baffle is arranged at the bottom of the connection shaft, an unloading groove is formed in the bottom end of the baffle, side plates are arranged on both sides of the baffle, hydraulic motors are arranged on the outer sides of the side plates, a connecting shaft is arranged in the baffle, and a connecting plate is arranged in the middle of the connecting shaft; a rotary base is arranged at the bottom of the main plate, a rotary disc is arranged at the bottom of the rotary base, three hydraulic cylinders are arranged at the bottom of the rotary disc, hydraulic rods are arranged at the bottoms of the hydraulic cylinders, and a soil grouser is arranged at the bottoms of the hydraulic rods. The self-propelled miniature rotary cultivator is convenient to move, stable in power outputand high in working efficiency.