This paper designs a wireless data transfer unit of industrial internet of things based on 32bit ARM microcontroller and TurMass module of 32bit RISCV architecture.The unit takes STM32F072 microcontroller unit of STMicroelectronics as the host control and running RTThread real-time operating system, and uses TKD100 module to carry out TurMass wireless transmission.The hardware and software design are introduced in this paper.It overcomes the problem that the working environment of some equipment in industrial Internet of things and power field is limited by region, and the data transmission is inconvenient.It provides a basis for fault diagnosis and maintenance of plant equipment.