Automatic urea detection device

The utility model discloses an automatic urea detection device which comprises a reaction cavity, a dosing area, a heating area and a detection area, wherein the dosing area, the heating area and the detection area are arranged in the reaction cavity; a plurality of reagent bottles are placed in the dosing area, each reagent bottle is connected with a dosing pipe, and a metering pump is arranged on the dosing pipe; the heating area comprises a cylindrical hollow cavity with an opening in the top, a rotating shaft is arranged on a bottom plate of the cylindrical hollow cavity, and the rotating shaft is fixedly connected with an external motor I; a heating block is arranged in the cylindrical hollow cavity, the rotating shaft is sleeved with the heating block, the heating block is fixedly connected with the rotating shaft, a plurality of semicircular grooves are evenly distributed in the outer circumference of the heating block, and the height of the heating block is equal to the height of the cylindrical hollo