The invention discloses a chitosan multi-effect repair mask and a preparation method thereof. The technical scheme is as follows: the mask comprise the following components in parts by weight: 1 to 6parts of chitosan; 1-6 parts of a film forming promoting material, 1-10 parts of a centella asiatica extracting solution; 1 to 10 parts of a ginseng extracting solution; 1 to 10 parts of a lavender extracting solution; 1-10 parts of an aloe extracting solution, 1-10 parts of glycerin, 0.01-0.2 part of sodium hyaluronate, 0.3-2 parts of tranexamic acid, 1-10 parts of trimethylglycine, 0.1-5 parts of panthenol, 0.1-2 parts of allantoin, 0.1-5 parts of gel, 0.1-0.5 part of a preservative and the balance of deionized water supplementing to 100 parts. The preparation method has the beneficial effects that the structural characteristics of chitosan are fully utilized to form a double-layer capsule structure, the absorption of various active substances is greatly enhanced, the effects of variousraw materials can be slowly released and continuously exerted, the problems of chapped skin, roughness, acne marks, acnes, comedo, couperose skin and the like are improved, the skin is repaired, and the skin health is recovered.