The invention provides an automatic proportioning system of emulsified liquid and a hydraulic feed system. The automatic proportioning system of emulsified liquid comprises a water treatment subsystem, a liquid mixing device, a pneumatic oil drum pump and an emulsified oil tank, wherein the water treatment subsystem is connected with a factory water supply pipeline and is used for filtering and softening clean water in the factory water supply pipeline to generate water for proportioning the emulsified liquid in the emulsified oil tank; the pneumatic oil drum pump is respectively connected to the emulsified oil tank and an emulsified oil drum and is sued for pumping the emulsified oil in the emulsified oil drum into the emulsified oil tank; and the liquid mixing device is respectively connected to the water treatment subsystem and the emulsified oil tank and is used for mixing and proportioning water for proportioning the emulsified liquid and emulsified oil to generate emulsified liquid, and transporting the emulsified liquid. The technical scheme provided by the invention solves the defect of the prior art that the emulsified oil often needs to be manually added into the emulsified oil tank when the emulsified liquid concentration is proportioned, and realizes the purpose of lightening the labor intensity of workers in adding the emulsified oil.