The invention discloses a novel water cup, which comprises a base part, wherein a support rod is fixedly arranged at the left side of the top of the base part; a guide connection groove is formed in the right side surface of the top of the base part; a guide connection rod is arranged in the guide connection groove in a leftward and rightward extending way; a slide connection support rod in upward extending arrangement is connected onto the guide connection rod in the guide connection groove in a slide connection matched way; a first stirring body and a second stirring body are respectively arranged at the opposite sides of the support rod and the slide connection support rod; a first hollow cavity is arranged in the support rod; a first rotating rod in leftward and rightward extending arrangement is arranged in the first hollow cavity; a first conical wheel is fixedly arranged on the first rotating rod; a second conical wheel is connected with the bottom of the right side of the first conical wheel in an engaged way; a rotating tube in rightward extending arrangement is fixedly arranged on the second conical wheel; an extending section of the right side of the rotating tube passes through the right side surface of the support rod and is connected with the right side surface of the support rod in a rotary and matched way; the tail end of the rotating tube is fixedly connected with the first stirring body. The novel water cup has the advantages that the structure is simple; the length regulation speed and the stirring stability are improved; regulating steps are simple; the whole work progress is quickened.