Abstract: The seed of Seriphidium borotalense was taken as the research object,the coating method of"pellet embryo"was used and the mixing test design was adopted.The effects of different materials in coating agent on the physical shape of the pelleted seeds and the effects of coating layer thickness on the germination of Seriphidium borotalense seeds with different germ powder ratio were studied.By measuring the disintegration time of 20 kinds of treatment,bentonite and talc powder were selected as the secondary coat‐ing materials.Then the compressive strength of the five treatments was determined,and B₃treatment and B₄treatment were selected as the optimal ratio.The liquidity test results show that the liquidity difference between B₃and B₄is not significant,and the liquidity of B₃and B₄is significantly higher than that of CK.In the treatment group,C₂treatment showed the best performance,the germina‐tion index was significantly different from other treatments,and the difference of coating layer thickness between individuals was minimal.