The invention discloses an integrated automatic dosing device. The device is characterized in that a drug storage tank (7) and a dosing tank (11) are arranged in a vertical sequence; a solenoid valve (4) is arranged at a place where the drug storage tank (7) communicate with the dosing tank (11) ; a dosing nozzle (6) is arranged at the upper end of the drug storage tank (7); the dosing nozzle (6) is connected with a dosing pump (1) through a pipe; liquid level gauges (2) are arranged on the sidewall of the drug storage tank (7); the solenoid valve (4), the dosing pump (1) and the liquid level gauges (2) are respectively connected with controllers (3); a top cover (9) is arranged on the upper end of the dosing tank (11); a stirrer (8) is arranged at the central position of the top cover (9); two stirring paddles (10) are arranged on the central shaft of the stirrer (8); a sewage discharge port (5) and a water outlet (12) are arranged at the lower part of the dosing tank (11). With the device provided by the invention, drug dissolving is fast, stirring efficiency is high, and a blockage phenomenon is avoided. With the control of the controllers, quantitative dosing can be realized. Automatic dosing is realized by the solenoid valve under the control of the controller.