Blood puncture-proof device

The invention discloses a blood puncture-proof device, which belongs to the technical field of medical equipment, and has the technical key points that the blood puncture-proof device comprises a blood bag, the blood bag is provided with a puncture-proof device, the puncture-proof device is communicated with the blood bag, and the puncture-proof device comprises a first sealing layer, a second sealing layer and a sliding assembly, the first sealing layer is connected to the surface of the blood bag, the second sealing layer is located on the side face of the first sealing layer, the second sealing layer is connected to the sliding assembly, and the sliding assembly is used for driving the second sealing layer to move. According to the blood bag, the needle tube is inserted into the first sealing layer, the sliding assembly is started, the sliding assembly can drive the first sealing layer to slide, then the first sealing layer drives the needle tube to be inserted into the second sealing layer, and therefore