Due to the low control system of the traditional lotus seed core-shelling and shelling machine, its production efficiency, safety and work reliability are relatively low. The programmable controller PLC in the field of control system technology can better achieve the management and control goals of the control system, such as safety and efficiency. Therefore, it is necessary to carry out electrical control research based on the realization of the lotus seed core-shelling machine using PLC. The purpose of this article is to solve and improve the related problems of the electrical control system of traditional lotus seed core-shelling and hulling machine. Through PLC technology, a detailed analysis and detailed analysis of how the electrical control system of lotus seed core-shelling and hulling machine can be processed more efficiently. The research and analysis of the main problems in the electrical control system of the lotus seed core-shelling and hulling machine, and the innovative application of PLC technology to the lotus seed core-shelling and hulling machine. Feasibility of electrical control of shelling machine. The research results show that this kind of lotus seed core-piercing and shelling machine using PLC electrical control system can make the lotus seed core-piercing and shelling work easier, more convenient and efficient, and can effectively improve the shelling rate of 2.5-3.4kg / h; wear The core rate is 1.0-1.7kg / h, the clean-up rate of the lotus core reaches 1%, and the crushing rate is reduced by 1%.