Overhead sucking cotton picking and spraying multipurpose machine

The utility model relates to a multipurpose machine for overhead sucking cotton picking and spraying, which belongs to the technical field of agricultural machinery. The utility model comprises a main and an auxiliary frames of a tractor, a handpiece driving member, and a front and a rear axles. The machine enlarges the gaps between the main and the auxiliary frame and ground. The handpiece driving member is connected to a drug pump which is positioned on the auxiliary frame, and is connected with a medicine storage box by an opening of the pump. The handpiece driving member can also be connected to a blower via a driving belt, and the blower leads to an air and cotton separator. A filter screen and a baffle plate are arranged in the separator, a pair of opening valve plates which leads to a cotton storage box is connected with the lower outlet of the separator, the side wall of the separator is provided with a row of pipe openings, and each of the pipe openings is respectively connected to a cotton suction pipe assembly. A transmission chain assembly is arranged between the main frame and the rear axle, and a physic liquor spray assembly is arranged on the auxiliary frame. After the machine body is elevated, the utility model is convenient for operation in cotton field and picking cotton by using suction. The drug pump is used for spraying medicine, which enhances efficacy, and lightens labor intensity, and the utility model is favorable to handling operation, such as pest management in the middle and later stage of the cotton field, etc.