The invention discloses a heparinoid composition-containing film coating agent and belongs to the technical field of biology. The heparinoid composition-containing film coating agent is characterizedby comprising 0.01-30 parts of mucopolysaccharide, 10-90 parts of film forming material, 0.1-5 parts of plasticizer, 0.1-5 parts of volatilizer, 0.01-5 parts of transdermal absorbent, 0.01-5 parts ofantioxidant, 0.01-5 parts of bacteriostatic agent, 0.01-5 parts of surfactant, and 0.1-5 parts of humectant. Under the synergistic effects of a cutin softener and the natural humectant, the excessivegrowth of a collagenous fiber is inhibited, the formation of a scar is alleviated; the moisture on the surface of the skin is retained, the collagenous fiber is softened, the elasticity is strengthened, and the heparinoid composition-containing film coating agent has a softening effect on the hypertrophic scar.