Growth type milk bottle, and use method and cleaning method thereof

The invention provides a growth type milk bottle, and a use method and a cleaning method thereof. The growth type milk bottle includes a silicone bottle body, a top end opening of the silicone bottlebody is clamped to an opening ring edge, a ring cover is screwed to the opening ring edge through threads, a nipple is clamped to the ring cover, a clean-keeping cover is arranged on the outer periphery of the nipple in a covered mode, the silicone bottle body is a conical cup body with a large bottom and a small top, a plurality of curing rings fixedly sleeve the outer periphery of the conical cup body, the diameters of the multiple curing rings are step by step decreased from bottom to top, the silicone bottle body between the adjacent curing rings is a folding section, a handle frame is clamped to the outside of the silicone bottle body and includes an upper ring and a lower ring, the upper ring sleeves the lower part of the top end opening of the silicone bottle body, the lower ring sleeves the bottom of the s