教师科学有效的理答,可以激发与维护学生的学习情感,调动与引导学生的深度思维,暴露与纠正学生的错误想法,修正与提升学生的原有认知.还可以为学生营造积极探索、求知创造的学习氛围,建立愉快和谐、心理相融的师生关系.本文首先分析了当前物理课堂教师理答行为存在的误区,然后提出了有效理答应该遵循的若干原则,最后将理答行为分成四种方式,并结合详实生动的教学案例分别进行了具体的阐述. Teachers science and effective answer, you can stimulate and maintain students ’learning emotion, mobilize and guide students’ deep thinking, exposing and correcting students ’mistaken ideas, correct and enhance students’ original cognition, and also can create positive exploration for students, To create a learning atmosphere and establish a harmonious and harmonious relationship between teachers and students.This article first analyzes the errors existing in the philosophical behavior of physical teachers and then puts forward some principles that should be followed in order to validate the philosophical answers.Finally, Divided into four ways, combined with detailed and vivid teaching case were respectively elaborated.