The invention relates to transport equipment, in particular to a belt conveyer which comprises an unloading roller, wherein the unloading roller is arranged on a front cross beam through a tightening device. Inclined struts support the front cross beam and a front vertical column to form a tripod. A carrier roller is arranged in the tripod, and the front cross beam and a back cross beam are connected through a screw and are arranged on the front vertical column and a back vertical column respectively. The front vertical column and the back vertical column are arranged on a base to form a conveyer rack. A carrier roller base is located on the cross beams. A lower side plate close to the front cross beam and a high side plate close to the back cross beam are arranged in the conveyer rack. A motor is arranged in the rack of the belt conveyer to ensure saving space. A speed reducer, whose input end and output end are arranged on the same side, controls a transmission roller and the motor to be located on the same side, and the space is saved further and the size of the conveyer is improved maximally. A coupler and a spline are connected with the motor and the transmission roller respectively so the speed reducer and the motor can be demounted independently and maintenance cost is reduced.