A regeneration membrane is provided for dentistry. The traditional thin collagen is turned into a flowable and shapeable collagen gel. A photo-crosslinking agent (i.e. riboflavin (vitamin B2)) is added in a biomedical-level collagen gel to obtain the shapeable collagen gel. The shapeable collagen gel is filled in a pre-filled syringe. The shapeable collagen gel is squeezed to a destined position for paving and shaping. Then, crosslinking is processed through UV illumination for curing. Flowability is achieved for applying. After applying, solidification is finished through illumination to turn liquid into solid. Thus, a regeneration membrane is formed with biological tolerance.