Efficient water purification device

The invention relates to an efficient water purification device, comprising a water purification bottle, wherein the water purification bottle comprises a cylindrical bottle body and an upturned bowl-shaped bottle cover; a hollow tubular filter element which is matched with the bottle body in shape and is used for carrying out sterilizing purification on raw water is laminated on the inner wall of the bottle body; the side wall of the bottle body is provided with a plurality of first through holes for water incoming; a shell which is in rotary connection with the bottle body covers the outer surface side wall of the bottle body, and second through holes corresponding to the plurality of first through holes are formed in the shell; when the efficient water purification device is used, the shell is rotated to control the opening of the first though holes; the bottom of the bottle body is provided with a groove, a convex block is arranged in the groove and is provided with a connecting ring, and a metal rope is connected to the connecting ring. When water is needed in use, the shell can be rotated to open the first through holes, then the water purification device is submerged into water, rapid purification and filtration are realized by using the pressure of the water, and the filtration efficiency is high; and the raw water can be contained in the bottle, and the purified water flowing out of the first through holes can be received by using the bottle cover. The efficient water purification device is simple in overall structure, has various usage modes, and is strong in applicability.