If poisoned by pesticides, a series of symptoms of organophosphorus poisoning usually appear, such as nicotinic and muscarinic symptoms, the patient will have tremors of the limbs, accompanied by pupil constriction, runny secretions, runny nose, the respiratory system and digestive system secretions will be increased, the bladder will be abnormally full, there is urinary retention, the patient will have a deep breathing, breath with an acidic odor, and the patient will also have a deep breath. Involvement of the cardiovascular system may result in palpitations, chest tightness, shortness of breath, precordial discomfort, and in the respiratory system may result in dyspnea and, in severe cases, respiratory failure. If the nervous system is involved, the patient will have obvious dizziness, headache, and in severe cases, acute renal failure, showing symptoms of oliguria and anuria.