Absorbing refrigeration system will be an important direction of refrigeration technology. The absorbing refrigeration system has the features of long pipelines,complex equipments, numerous and dispersed monitoring points, this paper designs one distributed data acquisition and control system based on LabVIEW and CAN bus. By using CAN bus technology, CAN node is developed with analog data acquisition and control in this system. The system realizes data acquisition and control with the software of LabVIEW to dispose the data collected, which achieves real-time monitoring of the system. The control system composed by CAN bus technology is completely decentralized and simple in structure, stable in work, it makes real-time communication and monitoring between signal nodes come true.