The flash dryer is one of the important equipment for the production of iron phosphate.Whether the temperature and pressure signals in each area of the flash dryer system can be quickly and accurately collected,analyzed,and fed back directly affects the stability of the entire flash dryer system and the production quality of iron phosphate powder.This article is based on Lab VIEW programming soft-ware,and elaborates on the hardware and software design of the instrument control system for flash drying machines.Leveraging the advantages of fast signal acquisition in the LabVIEW environment,virtual in-struments can accurately collect and analyze industrial equipment signals,thereby improving the accuracy of instrument control,enhancing system response speed,and improving work efficiency.