The present invention relates to a washing device, capable of directly supplying the washing water to the articles to be washed through a injection mechanism which is directly connected with a water supply valve so as to improve washing efficiency for washing. In particular, the washing device is composed of the following components: a housing for forming the appearance of the washing device; an external groove arranged on the inner side of the housing for storing the washing water, and having a circulation nozzle for injecting circulation washing water and a steam nozzle for injecting steam;a rotatable roller arranged on the inner side of the external groove and used for accepting articles to be washed; a water supply valve connected with an external water source and used for adjusting the fluid of the washing water; and a water supply pipe directly connected with the water supply valve and used for conveying the washing water.