Abstract: A method of achieving the serial communication of textile detection system based on LabVIEW is introduced,including communication protocols,hardware circuit,software design etc.The master computer of the communication system,PC,is programmed by LabVIEW,which is convenient for its graphic programming language.PIC microcontroller produced by Microchip corporation is used as the slave computer,programmed by assemble language.The communication between the master computer and the slave computer takes advantage of RS-232 protocol which can shorten development cycle with low cost.Meanwhile,applying this to temperature measuring system of cocoon cooking machine accomplishes the data transmission successfully.The communication system characterized by simple operation will find many possible uses in the portable textile detection system.