Chromium is usually formed into chromium compounds, which are toxic, and the hazards to the human body are commonly found in the skin, respiratory tract, gastrointestinal tract, and so on. 1. Skin hazards: Chromium skin ulcers (chromium sores), chromium skin ulcers are mainly related to the length of contact time, skin sensitization and personal hygiene habits. Chrome sores commonly occur on the hands, arms and feet, as long as the skin breaks, regardless of any part, can occur, the nail root is exposed, easy to accumulate dirt, the skin is also the most vulnerable to breakage. 2. Respiratory hazards: long-term exposure to chromium salts, will breathe into the respiratory tract, which may appear chromium rhinitis, followed by nasal septum ulcers, ulcers are generally in the lower end of the nasal septum cartilage before 1.5cm, no obvious pain, serious perforation, loss of smell, and so on. 3. Gastrointestinal hazards: Accidental ingestion of chromium (VI) compounds can cause thickening of oral mucosa, edema, regurgitation and vomiting, sometimes with blood, severe abdominal pain, liver and kidney damage, and in severe cases, circulatory failure, loss of consciousness, and even death. In case of inhalation or accidental ingestion of chromium compounds, consult a doctor in time for early detection and treatment, and standardize the treatment under the guidance of a physician.