Spring type safe blood taking needle

The utility model provides a spring type safety blood taking needle, which relates to the technical field of blood taking needles and comprises a first needle tube, a first needle seat, a safety cover and a spring, one end of the first needle seat is connected with the first needle tube, and the other end of the first needle seat is inserted into the safety cover. A spring is connected between the end, close to the first needle tube, of the safety cover and the first needle seat, an elastic inverted buckle and a stopping piece are arranged on the first needle seat, a limiting hole matched with the elastic inverted buckle is formed in the end, close to the first needle tube, of the safety cover, and a limiting step and a limiting elastic piece are arranged at the end, away from the first needle tube, of the safety cover. The limiting step and the limiting elastic piece are suitable for abutting against the two end faces of the stopping piece correspondingly. According to the spring type safety blood taking nee