The clinical manifestations of mild organophosphorus pesticide poisoning vary due to large individual differences, such as chest tightness, shortness of breath and dyspnea. If people accidentally eat or come into contact with a small amount of organophosphorus pesticide, it may inhibit the activity of acetylcholinesterase, causing a large accumulation of acetylcholine in the physiological effect site of the body, which triggers the signs and symptoms of poisoning. Because of individual differences, the clinical manifestations are also different, patients may appear smooth muscle spasm phenomenon, such as pupil narrowing, diarrhea, abdominal pain, etc., and due to increased secretion of glands, sweating, salivation (drooling), etc., which may be accompanied by tightness in the chest, shortness of breath, dyspnea and other phenomena. This disease can not be self-cured, it is recommended that patients go to the hospital in a timely manner, under the guidance of the doctor, standardized treatment, so as not to affect the life and health.