The invention discloses a dacron fabric antistatic finishing method which comprises the following steps: water is added into a finishing agent first to prepare steeping liquor, and then a fabric is put into the steeping liquor for padding with pick-up being 70-80%, washed with water for 2-3 times finally, dehydrated and dried. The finishing agent comprises the following components in parts by weight: 20-24 parts of polyethylene glycol diamine, 6-8 parts of diatomaceous earth, 2-7 parts of borax, 5-8 parts of colloidal silicon dioxide, 2-6 parts of potassium oxalate, 3-6 parts of turpentine oil, 2-6 parts of starch ether, 3-6 parts of chitosan, 4-8 parts of cinnamaldehyde, 11-14 parts of linolenic acid, 2-7 parts of ammonium perchlorate, 6-8 parts of a triethanolamine dispersing agent, 4-9 parts of amyl acetate, 5-8 parts of soap powder, 5-12 parts of ethyoxyl dodecanamide and 20-30 parts of deionized water. The finishing method provided by the invention is convenient in operation, green and environment-friendly, the finished dacron fabric has excellent antistatic and antibacterial performance, the washing fastness is strong and the hand feeling is soft.