The invention discloses a mixing system. The mixing system comprises a mixing module and an output module, the mixing module comprises a first liquid inlet header, an injection pump, a powder tank anda mixer, the first liquid inlet header is connected with the injection pump, the injection pump is connected with the mixer, and the powder tank provides powder for the mixer; the output module comprises a second liquid inlet header, a suction pump, a second flowmeter, a static mixer, a mixing tank and a liquid discharge manifold, and the second liquid inlet header, the section pump, the second flowmeter, the static mixer, the mixing tank and the liquid discharge manifold are sequentially connected; an outlet of the mixer of the mixing module is connected with an inlet of the suction pump ofthe output module through a valve, and the mixing module and the output module can be used respectively or used in combination as a complete set. The mixing system has the beneficial effects that thesecond liquid inlet header and the static mixer are arranged, mixing with large discharge capacity and high quality can be completed with low energy consumption; and the mixing system is flexible in disassembly and assembly.