The invention discloses a numerical control device capable of concurrently controlling two-class industrial Ethernet bus slave station equipment. The numerical control device capable of concurrently controlling two-class industrial Ethernet bus slave station equipment comprises a human-computer interaction unit and a main control unit, wherein the human-computer interaction unit is composed of a communication and data exchange interface, a liquid crystal display (LCD) screen, an operation panel and the like, the main control unit is of a structure of a central processing unit (CUP) and a field programmable gata array (FPGA), the CUP and the FPGA conduct data exchange through a system bus interface module. A first industrial Ethernet bus master station function module, a first twin-end data storage device, a first network chip, a first network interface and the like are used for dealing with a first class industrial Ethernet bus protocol and transmitting data, a second industrial Ethernet bus master station function module, a second twin-end data storage device, a second network chip, a second network interface and the like are used for dealing with a second class industrial Ethernet bus protocol and transmitting the data, an interrupt signal processing module conducts logical control to interrupt application signals output by the two-class bus master station modules to the CPU, and concurrent control over two classes of buses is achieved.