Insecticides: insecticides nerve agent Xinxiang rice growth regulators, that is to say, these pesticides primary role of the nervous system of pests, thus making poisoning and death. Nerve agent site of action: Some nerve agents such as Neem and other antifeedants sensory neurons can act on this, the site of action known as the first class action site. Insecticide: nerve agent site of action. Sensory nerve axon terminals and central neurons parts not in direct contact Zhejiang rice growth regulators, but there are gaps, and chemical composition as the contact Zhoukou rice growth regulators, such joints, called synapses. Organophosphate and carbamate chemical release enables transfer material accumulated between postsynaptic synaptic membrane transducer role. Such action occurs in the postsynaptic membrane, it is called the fourth class action site.