Counting accuracy of packing related to the quantity of boxing, which is a index of the quality of final products, and a key factor that affects the image of an enterprise. At present this problem is tried to be solved by adjustment of equipments and artificial detection in the process, but it cannot yet ensure the counting precision in final boxing. In this paper, the intelligent video inspection system was used to detcet and analyze the packing process of the packing machine, and it was found the factor influencing packing accuracy was the mechanical systems, which could not ensure that the space between two small packages of salt in the final transmission was big enough, and thus resulted in defects of fold and nearly packet, delayed counting system, and quality defect of multiple packing. The result laid foundation for further solving the defect of multiple packing.