DMSO is solvent of pesticide and farm fertilizer, penetrant and synergistic agent. It is applied in mycosis of fruit tree. Non-infiltration medicine and dye are matched to DMSO water solution in plant experiment, daub stock, find that braches and leaves and rootstalk contain pigmentation after 12 hours, and testing result vanishes after 24 hours. It shows that medicine and coloring matter in DMSO can penetrate and circulate, and discharge through metabolism. This special property displays that agricultural application future for DMSO is waiting for research.