Abstractthis article is for the purpose of acting according to English discipline the characteristic, analyzes in the middle school English teaching through the concrete instance to have the polarization origin and the preventing and controlling the teaching process, for prevented the polarization, the teacher first should analyze the reason which the student studies falls behind, acts appropriately to the situation, pours into own primary coverage includes: First, the split up phenomenon occurs essence, reason and characteristic; Second, teacher's emotion factor and student's interest raise to polarization influence; Third, prevents the polarization measure the them, the key analysis showing intelligence factor is not the polarization primary the same time, according to English program of instruction request, under the new education form, requests each teacher to follow close on the class to change the step, found the science effective educational model, carries on the education reform attempt