The utility model provides a hidden type anti-theft oil check value, and belongs to the field of the oil-gas anti-theft technology in the exploitation process of oil and gas. A valve seat is arranged at one side of an inner cavity of a check valve body, a valve ball makes contact with the valve seat, the other side of the valve ball is connected with a thrust spring, and the thrust spring is supported by a T-shaped spring supporting rod. The hidden type anti-theft oil check value has the advantages of being low in manufacturing cost, simple in structure and convenient to use.