Exceptionally heavy sweating requires consideration of physiologic factors, autonomic nervous system disorders, disease factors, genetic factors, medication factors, and dietary factors. 1. Physiological factors: When it is too hot, excessive sweating is a normal physiological phenomenon. In addition, low blood sugar, perimenopause and hormonal changes caused by pregnancy may also cause excessive sweating. 2. Disorders of the autonomic nervous system: strenuous exercise, excessive mental tension, emotional over-excitement, etc., will lead to abnormal sympathetic nerve excitation, making the sweat glands increase in excitability, the phenomenon of excessive sweating. 3. Disease factors: excessive sweating may also be caused by some diseases, such as malignant tumors, febrile diseases, hyperthyroidism, infections, Parkinson’s disease and so on. 4. Genetic factors: primary hyperhidrosis caused by genetic factors can also lead to excessive sweating symptoms. 5. Drugs: Some drugs may cause excessive sweating, such as anti-anxiety drugs, antipsychotic drugs, antipyretic and analgesic drugs. 6. Dietary factors: long-term excessive intake of caffeine, alcohol and other substances may induce hyperhidrosis. Factors that can cause particularly excessive sweating are complex, and individuals should consult a medical professional when they experience unexplained symptoms of excessive sweating over a long period of time.