After oxalic acid on the hands, the skin is likely to be burned, redness, swelling and hot pain symptoms, can be cleaned with water, topical drugs, oral medication. 1. Wash with water: If the local skin has been burned, the hand should be immediately placed under running water for rinsing, which will help remove the remaining liquid and avoid persistent irritation of the skin on the hand. 2. Topical medication: patients can use saline to rinse the hand anti-inflammatory, and then use povidone-iodine coating, to prevent the emergence of large erosion ulcers, and if necessary, to give the moist burn cream coated, to improve the local symptoms. 3. Oral medication: in order to prevent local infection, can cooperate with the doctor’s preventive choice of antibiotic medication, commonly used drugs, including amoxicillin, cefixime and so on. It is recommended that patients accidentally oxalic acid on the hands, should be combined with their own situation, give the above treatment, and then immediately consult a doctor.