A disposable self-destruction safety syringe without fluid residuacomprises a syringe tube (1), a push rod (2), a needle mount (3) and a needle(4). The push rod (2) and the needle mount (3) are mounted in the syringetube (1). A plunger (5) slidably fitting with the inside wall of the syringetube(1) is provided on the front end of the push rod (2). Wherein, an automaticretraction means (6) is mounted in the front end of the chamber of the pushrod (2). The automatic retraction means (6) and the needle mount (3) are eachprovided with a snap-latch member, respectively, for connecting the needlemount (3) with the automatic retraction means (6). Each of said snap-latchmember is provided with a fluid pass chamber, such that the fluid remaininginside the syringe tube (1) flows, through the fluid pass chamber when thesnap-latch members form an interference fit and engage with each other, intothe chamber of the needle mount (3) and the needle (4).
