Oleander poisoning may cause headache, nausea and vomiting, loss of appetite, fatigue, bradycardia and other symptoms. If the patient is poisoned after taking oleander accidentally, headache, nausea and vomiting will occur, and there may be loss of appetite, fatigue, and if the poisoning is more serious, there will be bradycardia, arrhythmia, conduction block and other reactions. Oleander is a kind of Chinese medicine, bitter taste, cold nature; to the heart meridian, can play a strong heart, diuretic and analgesic effect, and also has the effect of expectorant asthma, can be used for the treatment of heart failure, epilepsy, blood stasis and menstrual occlusion and other diseases. However, oleander is somewhat toxic, if improperly medicated or overmedicated, or accidentally ingested, etc. will have adverse effects on the body. It is recommended to cultivate it outdoors to avoid children’s contact and accidental ingestion. Even if the plant has dried up, it should be cleaned up in time; wear gloves when pruning the oleander and pay attention to protection to avoid direct contact. If there is a reaction of discomfort after taking oleander, you also need to go to the hospital in time for treatment.