Acute organophosphorus pesticide poisoning manifestations are as follows: 1, muscarinic symptoms: that is, the medical M-like symptoms, muscarinic symptoms of increased secretion of glands, the patient can appear salivation, shortness of breath, lungs can be heard wet rales, pupil changes; 2, nicotinic symptoms: that is, the N-like symptoms, mainly caused by the muscle bundle tremor, found that the muscles of the limbs involuntary tremor, trembling, similar to the performance of the convulsion; 3, the central nervous system performance: organophosphorus poisoning is more serious, there will be damage to the central nervous system. Central nervous system: when organophosphorus poisoning is more serious, central nervous system damage will occur. The damage to the central nervous system can be both excitatory manifestations, such as the patient’s agitation, delirium, hand and foot dance, do not recognize family members and other excitatory manifestations, but also inhibitory manifestations, such as coma or respiratory depression in serious patients, are the manifestations of severe organophosphorus poisoning. To summarize, the main manifestations of organophosphorus poisoning are divided into three kinds, M-like symptoms, i.e., excessive secretion of glands, N-like symptoms, i.e., tremor of muscle bundles, and CNS manifestations, i.e., excitation or inhibition of the central nervous system.