The invention provides a water cooled computer desk which comprises a desktop, a desk frame, water cooling fluid and a water pump, wherein the desk is formed by metal pipes which are mutually communicated with each other. The metal pipes contain the water cooling fluid, a water inlet and a water outlet are arranged on the metal pipes, and the water inlet and the water outlet are communicated with the water pump. According to the water cooled computer desk, heat of computer hardware can be taken away through water cycling and heat dissipation effect can be achieved without fans, and heat dissipation is faster with nearly no noise.