Objective To analyze the risk factors of acute organophosphate pesticide poisoning intermediate syndrome(IMS ),and discuss the corresponding nursing countermeasures. Methods From January 2007 to January 2011,50 cases of patients with acute organophosphate pesticide poisoning were collected as the research object.And we analyzed the risk factors of related intermediate syndrome. Results The incidence rate of acute organophosphate poisoning intermediate syndrome was 10.0％.IMS mainly occurred at age of 20～50 years old,rarely occurred at age of ＜20 and ＞50 years old.The incidence of IMS with oral intake was higher than respiratory poisoning and skin poisoning.The incidence of IMS caused by drugs of moderate toxicity was higher than drugs with high or low toxicity.The incidence of IMS patients who got atropinization within 2 hours was less than those without it.The incidence of IMS patients using aminoglycoside drugs was higher than those not using them. Conclusions Poisoning way,toxicity of toxicant,timely treatment,basic diseases,atropinization within 2 hours,and using aminoglycoside drugs can influence the condition and prognosis of intermediate syndrome caused by organophosphate pesticide poisoning.