The utility model relates to a double helix circulation flow type leveling machine for a seedling raising shed seedbed. The double helix circulation flow type leveling machine for the seedling raising shed seedbed mainly comprises a right helix scarifier, a main rack, a first opening, a second opening, an intermediate driving shaft, an impeller shaft, a first reversing chain wheel, a second reversing chain wheel, a third reversing chain wheel, a circulation conveying impeller, a compressing roll, a left helix conveyor, a rear guard scraping and leveling plate, a front guard plate, a first transmission chain wheel, a second transmission chain wheel, a first dual chain wheel, a second dual chain wheel, and the like. One end of the right helix scarifier and one end of the left helix conveyor are arranged on a right supporting plate, the other end of the right helix scarifier and the other end of the left helix conveyor are arranged on a left supporting plate, the front guard plate and the rear guard scraping and leveling plate are arranged on the main rack, the compressing roll is connected with the main rack, the first reversing chain wheel and the third reversing chain wheel are arranged on the impeller shaft, the second reversing chain wheel is arranged on the circulation conveying impeller, and the circulation conveying impeller is sleeved on the left helix conveyor. The double helix circulation flow type leveling machine for the seedling raising shed seedbed utilizes a double helix excavating and conveying structure and can achieve layered excavating, surplus soil is conveyed in a circulation flow mode after scraping and leveling of a front scraping and leveling plate and the rear scraping and leveling plate, the leveling operation process of double-layer soil loosing and circulation conveying is achieved, arc is not formed on an intermediate connection place, and round trip operation is not needed.