A data collection system based on single chip processor is proposed for working status information acquisition of spinning-machine's spindle units. Being a bottom neck of a distributed monitoring system, the data collection system accomplished working status information acquisition such as armature voltage and current of a spindle braking switch, start, halt and brake of a three-phase current motor, torque and rotary speed of a rotary cup, supports the work of failure predictions and fault diagnosis. As there are many spinning-machines in a workshop, working status information of spindle units are characterized by repeatability and a large quantity. It should meet the needs of reliable and real time data collection. Therefore, according to real time response of bulk data, the relevant sensor principles are determined, and the framework of the data collection system is presented on the basis of Profibus and RS-485 control and communication, serial data collection and designated storage space. As applied in spinning-machine's workshop, accurate working status information acquisition, reliable and real time transmission of data can be realized.