The invention discloses an integrated dosing device. The device comprises a dosing barrel (1), an external connecting pipe (2), a stirrer (3), a ball valve (4), a Y-shaped filter (5), a metering pump(6), a safety valve (7), a pulse damper (8), a bypass pipe (9), a sampling pipe (10) and a back pressure valve (11), wherein the stirrer (3) is arranged at the upper end of the dosing barrel (1); a stirring paddle (12) extending at one end of the stirrer (3) is arranged in the dosing barrel (1); the external connecting pipe (2) is arranged on the outer wall of the dosing barrel (1); the ball valve(4), the Y-shaped filter (5), the metering pump (6) and the safety valve (7) are arranged on the external connecting pipe (2) sequentially; the bypass pipe (9) is further connected to the external connecting pipe (2); and the pulse damper (8), the sampling pipe (10) and the back pressure valve (11) are arranged on the bypass pipe (9). The integrated dosing device is reasonable in structural design and convenient to use.