The invention provides a bagging and encasement all-in-one machine which comprises a conveyer system, a bagging system, a encasement system and a control system, wherein the conveyer system comprises a workbin, a loading material conveyor belt arranged at a position of an opening of the workbin, and a working table conveying device arranged in the back of the loading material conveyor belt. The bagging system is arranged in the middle of the working table conveying device, and comprises a net sleeve loading material roller, a net sleeve cylinder arranged below the net sleeve loading material roller, conveying rollers arranged on two sides including a left side and a right side of the net sleeve cylinder, fixed supports arranged on two sides including a front side and a back side of the net sleeve cylinder, a net sleeve cutter arranged on the upper middle portion of the net sleeve cylinder, a net sleeve expansion device arranged below the net sleeve cylinder, and a negative-pressure adsorption pushing device arranged below the working table conveying device which is arranged below the net sleeve expansion device. Compared with the prior art, the bagging and encasement all-in-one machine achieves automation of a bagging and encasement overall process, and is reasonable in structure, convenient to use and high in packaging efficiency.