The invention discloses a hydrops drainage device. According to the technical scheme, the hydrops drainage device comprises a puncture needle and a first drainage tube, wherein two ends of the puncture needle and two ends of the first drainage tube are connected together through a first connecting portion; a valve is arranged on the first drainage tube; the other end of the first drainage tube isconnected with a second drainage tube through a second connecting portion; the second drainage tube communicates with a hydrops accommodating barrel; the hydrops accommodating barrel further communicates with a liquid drainage tube; a plug is inserted in an end of the liquid drainage tube; the inside of the second drainage tube is slidably connected with a push block; the push block is further connected with a power portion which controls the push block to slide; and the power portion comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, aspring, a first shaft ring, a fixing plate and a box. The hydrops drainage device has the characteristics of simple structure and convenience in assembling, and is high in applicability and convenientto use.