A milk bottle suction tube group structure for preventing accumulation of milk, comprising: a milk bottle, a locking cap, a nipple, and a suction tube group. The outer peripheral surface of the bottle mouth of the milk bottle is provided with a locking section to lock the cap, the nipple and The straw set is clamped between the milk bottle and the lock cover. The upper section of the nipple is provided with a sucking part, and the lower section is provided with a wide tapered sleeve hole communicating with the suction part. A ring is provided on the periphery of the bottom end and the tapered sleeve hole The inner peripheral surface is provided with a stop ring and a grooved joint. The suction tube assembly includes a supporting piece, a hose, and a gravity ball with air holes. The supporting piece 71 is provided with an arc convex cone on the surface The outer edge of the sheet-like body is provided with a snap-fitting and embedding aid. A two-step casing section with perforations penetrates down the center of the top surface, so that the upper section is provided with a wide pipe diameter holding section and the lower section is provided The intubation section is smaller than the diameter of the grip. The hose is a straw body. The upper end is connected to the supporting piece and the sleeve section intubation section and abuts against the bottom edge of the gripping section, so that the upper gripping section forms an extended section. , The gravity ball is connected at the lower end, the buckle part of the straw set is used to engage the ribs to be inserted into the recessed grooves of the taper sleeve hole of the lower section of the nipple and the restricted position stop ring blocks to form rapid positioning, and make The curved convex surface of the supporting piece simultaneously forms a blocking part and an auxiliary diversion part, so that part of the liquid flowing into the nipple is then diverted to the suction part and sucked out smoothly, so as to ach