The invention discloses an oil body gel matrix. The gel matrix is prepared from the following components in percentage by weight: 1-5 percent of carboxyethyl cellulose, 5-40 percent of glycerinum, 0.01-0.1 percent of methylparaben, 0.01-0.1 percent of propylparaben, and the balance of injection water, wherein 30 percent of a vegetable oil body can be mixed to prepare the vegetable oil gel which does not have mildew when being stored for 12 months at 37 DEG C, the appearance, pH and other physicochemical indexes do not change. The invention also provides a vegetable oil body containing aFGF (acidic fibroblast growth factor), which is prepared by connecting a nucleotide sequence of human aFGF to the 3' terminal of the nucleic acid sequence of an oil body protein of an oil body expression vector p1390ONE, transferring into the oil body of oil crops to express the aFGF, extracting the oil body, and mixing with the gel matrix of the oil body. The vegetable oil gel containing aFGF is stored for 12 months at 4DEG C, the aFGF activity does not have remarkable changes.