The invention provides color paste for pad dyeing of dacron. The color paste for pad dyeing of dacron is prepared from the following raw materials in percentage by weight: 0.2 to 0.8 percent of polyacrylamide, 10 to 40 percent of water-soluble acrylic resin emulsion and 0.1 to 20 percent liquid dye. The color paste for pad dyeing of the dacron is prepared by the following steps: dissolving 0.2 to 0.8 percent of high-molecular polyacrylamide with water; adding 10 to 40 percent of water-soluble acrylic resin emulsion, 0.2 to 20 percent of high-concentration liquid state disperse dye, 0.2 to 0.5 percent of levelling agent, 0.1 to 0.5 percent of dispersing agent, 0.2 to 1 percent of softening agent and the balance of water; mixing the components; dispersing for 1 to 1.5 hours, and adding a small amount of anti-foaming agent; dispersing; mixing uniformly. According to the method for performing pad dyeing on dacron fabric through the color paste for pad dyeing of dacron, the mangle expression is controlled within 60 to 70 percent, leaching and rolling are performed twice, and color is developed for 120 to 180 seconds at the high temperature of 180 to 230 DEG C after rolling. The darcon fabric produced by the process meets the requirement of environmental certification, and various fastness indexes can meet the requirements of textile clothing materials.