The utility model provides a belt feeder coal quality sampling head, including the sampling dolly, hydraulic system, the leading truck, the box, the blanking fill, the sampling dolly includes hydraulic motor, the board is turned over in two samplings, a hydraulic system, fixed frame, the plastic width -lock type single -layer sealed packing case comprises a casin, the fluid pressure line, realizethe automatic sampling of entrance coal, realize that front end raw material detection does not have humanization summation wordization, the efficiency of the enterprise is improved, automatic controlsampling frequency, control sampling precision, ensure the sample security, the authenticity, adapt to multiple defeated coal strage way structure and appearance, ensure defeated coal strage way integrality, simple structure, low in cost, the sampling is swift, occupation space is little, operating repair is convenient, it is outside totally closed, moreover, the steam generator is simple in structure, low manufacture cost, the problem of the blanking easy chute blockage of sampling of fighting is solved.