The utility model relates to an engineering construction field discloses a novel concrete sample device, include: thief rod (1), first separation blade (2), second separation blade (3), elasticity close mechanism (4), wherein, first separation blade (2) and second separation blade (3) are connected in elasticity close mechanism (4), first separation blade (2) and second separation blade (3) can be closed for the sealed hollow cylinder of one end, thief rod (1) top is equipped with the button, elasticity close mechanism (4) through locking mechanical system with thief rod (1) and the button interlock. The utility model discloses a will the utility model discloses insert the agitator tank, can take a sample, save time, save cost and manpower.