The invention relates to a concrete continuous mixing and conveying system device, which comprises a stone screen (1), a stone measuring and conveying system (2), a concrete mixing cylinder driving motor (3), a concrete mixing cylinder (4), a concrete fixed mixer (5), a sand measuring and conveying system (6), a water feed regulating valve (7), a water tank and a pumping system (8), a concrete storage tank and a pumping system (9), a concrete secondary mixing and conveying system (10), a concrete discharge regulating valve (11), a cement measuring and conveying system (12), an additive measuring and conveying system (13), and the like; the feed mode of concrete solid components adopts a screw rod continuous pumping mode, and the concrete is fully and intensely mixed at one time after the concrete enters the concrete mixing cylinder (4) of which the inner wall is provided with compulsory mixing blades; and the mixed concrete is put into the concrete secondary mixing and conveying system (10) through the concrete discharge regulating valve (11) for the second mixing and then pumped into the concrete storage tank (9). The whole system can maintain the required concrete mixture ratio through control, can continuously mix and discharge the concrete, and has high production efficiency.