Experimental water tank capable of preventing water accumulation

The invention discloses an anti-ponding experimental water tank which comprises a lower tank body, a flow gathering hopper is arranged at the bottom end of the lower tank body, a water outlet is formed in the flow gathering hopper, an upper tank body is arranged on the lower tank body, an overflow device is arranged between the lower tank body and the upper tank body, a water inlet is formed in the flow gathering hopper, and a water outlet is formed in the water inlet. And a connecting pipe is fixedly connected to one end, positioned in the lower box body, of the water inlet. By means of the layout mode and the arrangement mode of water supply, rectification, overflow and accumulated water drainage, the overall proportion of a water supply area can be greatly increased, the size of a rectification plate can be remarkably reduced, and due to the fact that a flow gathering hopper is arranged at the bottom of the lower box body and the lower box body is arranged in a cylindrical shape, the water supply efficienc