Abstract: Take southern Henan as emphasis, the time interval has been close to meteorological data in 30 comparative analysis by bearing child mainly to Zhu Ma Dian City and Xin Xiang City summer maize having representative representativeness of southern Henan northern Henan area , has found out the distance of two climate characteristic and has born child to the maize the stage effect, have made meteorological phenomena such as rain , the accumulative temperatures , illumination clear the factor relation to distance of two summer maize growth growth, reaches southern Henan area climate condition being able to satisfy summer maize growth growth need completely, Be only year room meteorological phenomena key element space-time scatters with the maize bear child the stage need does not fit with each other sometimes but affect whose output conclusion, have joined the measure having brought forward answering but adopting , have provided the certain science basis to boosting the southern Henan area summer maize giving birth to a child.Key Words：Climate factor; Southern Henan area; Northern Henan area; Maize; The countermeasure studies