In view of the difficulty of lubrication construction,high safety risk and long working time of the balance weight frame of the Three Gorges ship lift,according to the structural form,operation characteristics and distribution of lubrication points of the balance weight frame of the Three Gorges ship lift,we design a centralized lubrication system for dry oil of portable single-line delivery,analyze the friction type and operating parameters of the lubrication point of the counterweight frame,determine the appropriate lubricant,calculate the oil demand and pipeline pressure loss of each lubrication point through research,and determine the specification,path and system working pressure of the pipeline to select the appropriate dispenser and grease pump.The results show that the modified dry oil centralized lubrication system of the balance weight frame is simple and easy to operate,and reduces the construction labor intensity and grease loss.