The study aim to clarify pest occurrence and characteristics under climate change of corn in Jilin Province, thus provide a theoretical basis for the forecast of corn pest occurrence and develop pest control techniques under climate change. In 2013 in Lishu County, the central region of Jilin Province, field trials with different ripening corn were conducted according to different ripening maize varieties sensitivity to diseases,insect pestsresponse to climate change and its effect on maize yield. The results showed that: average rates of armyworm of mid-early-maturing, mid-maturing group and mid-late-maturing group were 5.59%, 3.23% and 2.61%, respectively; the average stem borers rate of corn borer of mid-early-maturing, mid-maturing group and mid-late-maturing group were 17.40%, 16.51% and 5.97%, respectively; corn leaf spot disease index of mid-early-maturing, mid-maturing group and mid-late-maturing group were 2.03%-10.07%, 0.70%-2.73% and 0.73%- 3.09%, respectively, which illustrates that the plant diseases and insect pests of early maturing maize's sensitivity to climate change was strong and disease resistance and insect resistance of early maturing maize was weaker than the medium mid-maturing and mid-late-maturing maize; different varieties of the same maturity due to genetic characteristics also showed resistance difference; different maturity maize production were 8732.8- 10273.1 kg/hm~2, 11507.0- 13724.0 kg/hm~2 and 11684.5- 12722.6 kg/hm~2, respectively. Yield performance in mid- maturing group and mid- late- maturing group was significantly higher than in the early maturity group, which illustrates that in the central region of Jilin Province, under the condition of low temperature and high humidity in early spring and high temperature and high humidity in growing season,disease occurrence and insect pests were heavier for early maturity varieties, which was not conducive to the improvement of maize production.