Demonstration device for measuring precipitation by simulating rainfall

The utility model relates to a demonstration device for measuring precipitation by simulating rainfall. The demonstration device comprises a demonstration box body, a water receiving drawer, a rain gauge and a water storage tank, the demonstration box body is transparent and is internally provided with a box body inner cavity; an upper mounting plate, a water outlet panel and a water filtering plate are arranged in the inner cavity of the box body, and the inner cavity of the box body is divided into a water storage equipment connecting cavity, a precipitation measuring cavity and a water collecting cavity from top to bottom; the water outlet panel is a rectangular shower head; an upper connecting piece is fixed on the upper mounting plate, the upper connecting piece is communicated with the water outlet panel through a connecting pipe, and a control valve is arranged on the connecting pipe; a plurality of through holes are uniformly distributed in the water filtering plate; the water receiving drawer is arra