The invention discloses a juicer. The juicer comprises a container, a squeezing wheel and an upper cover. The container is provided with a juice discharge outlet and a residue discharge outlet. The squeezing wheel is arranged in the container and used for squeezing juice from vegetables and fruits. The upper cover is coupled to the top of the container and is provided with a feed inlet used for feeding the vegetables and the fruits. The squeezing wheel comprises an upper squeezing and cutting mechanism and a lower squeezing and juicing mechanism. The squeezing and cutting mechanism comprises a rotating body expanding gradually from top to bottom. A first squeezing blade extending spirally and a cutting blade extending spirally are arranged on the outer surface of the rotating body. The initial point of the cutting blade is lower than that of the first squeezing blade. The squeezing and juicing mechanism comprises a squeezing net connected with the outer edge of the lower end of the rotating body. A second squeezing blade is spirally arranged on the outer surface of the squeezing net. The squeezing wheel comprises the upper squeezing and cutting mechanism and the lower squeezing and juicing mechanism, so that functions of cutting, squeezing and filtering the vegetables and the fruits are achieved integrally, and the juicer is convenient to use and easy to clean.