Lei Gong Teng may be poisonous and damaging to the body when taken for 4 years. Lei Gong Teng is a poisonous Chinese medicine that can cause damage to the body when taken for a long time. According to the record of “Chinese Materia Medica”, the pharmacological effects of Lei Gongteng are anti-tumor, anti-inflammatory, immune suppression, etc. It is commonly used in the treatment of rheumatoid arthritis, rheumatoid arthritis, glomerulonephritis, nephrotic syndrome, lupus erythematosus, dry mouth and eyes syndrome, eczema, psoriasis, and so on. However, Lei Gongteng is very toxic to human beings, after taking the gastrointestinal tract has an irritating effect and the nervous system, liver, heart have toxic effects, overdose can be poisoned, or even death, so it is advisable to be careful with internal use. Specific drugs should be used under the guidance of a physician, do not self-medicate, so as not to cause adverse consequences.