The invention relates to an automatic releasing agent proportioning economizer for a die casting machine. The automatic releasing agent proportioning economizer is high in automation and control accuracy and comprises a liquid level sensor, a flow sensor, a pressure sensor, an electric energy transducer, a liquid level module, a flow module, a pressure module, an electric energy module, an original feedback system, a human machine interface (HMI) monitoring system, a communication module, an input interface, a central processing unit, a frequency transformer communication data interface, an output interface, a frequency transformer I, a frequency transformer II, a proportional valve and an external execution unit, wherein the flow sensor, the liquid level sensor and the pressure sensor are used for acquiring the flow of a raw material, the flow of water, a liquid level of a releasing agent dispensing pool and the pressure of a dispensing pump manifold in real time; the central processing unit is used for processing and regulating; and the execution unit is used for accurate execution. The automatic releasing agent proportioning economizer has the characteristics that: the raw material of a releasing agent is reduced, the production efficiency of the die casting machine is improved, electric energy is saved, pollution is reduced, automation of production management is realized,and impact on natural grid is reduced.