The invention discloses an improved water cup. The improved water cup includes a water cup, a plug which is connected with the water cup through a wire, and a socket which is connected with the plug in a coordinated manner, wherein a cup handle is fixed at the right side surface of the water cup, and a cup cover is arranged at the top of the water cup; an upper insertion groove with a rightward opening end and a lower insertion groove with a rightward opening end are correspondingly formed in the upper part and the lower part of the socket; a communicated slide push groove is formed between the upper insertion groove and the lower insertion groove; the left end wall of the slide push groove is provided with a slide push cavity with an opening end toward the slide push groove; an upper conduction groove which is communicated with the upper insertion groove is formed in the top wall of the slide push cavity; a lower conduction groove which is communicated with the lower insertion grooveis formed in the bottom wall of the slide push cavity; an upper slide push block and a lower slide push block are correspondingly and movably arranged in the slide push groove up and down; an upper slide push arm stretching into the upper conduction groove and a lower slide push arm stretching into the lower conduction groove are movably arranged in the slide push cavity; a lower connection plateis fixedly arranged between the lower end of the upper slide push arm and the upper end of the lower slide push block; and an upper connection plate is fixedly arranged between the upper end of the lower slide push arm and the lower end of the upper slide push block.