The utility model relates to a weighing sensor support device belongs to modernized agricultural machine technical equipment technical field. Technical scheme is: slide (1) sets up in hydro -cylinder(12) top through slidle support (2) are fixed, hydro -cylinder (12) set up on oil cylinder frame (13), clamp plate (11) interconnect with hydro -cylinder (12) head through the round pin axle, title plate framework (8) front end sets up the front end in clamp plate (11) through fold paper (10), pulley yoke (6) have two, one end is fixed to be set up at title plate framework (8) afterbody, the otherend passes through pulley spindle (5) and interconnects with pulley (4), pulley (4) set up in slide (1), title plate framework (8) is equipped with four sensor (9), the fixed upper surface that setsup in sensor (9) of title board (7). The beneficial effects of the utility model are that: the weight that can realize the straw is supported by weighing sensor completely, improves the accuracy and the reliability of weighing.