ABSTRACTThe new criminal law of China in Article 20 should be held criminally responsible excessive defence acts, but the new criminal law does not make defined to significantly more than the necessary minimum and sign ficant harm, resulting in the judicially practice belong to mea sure whether one had to defend when the deviation. In addition excessive defence Penal Code of the object and subjective aspects of existence must have the deactis of other countries regarding the provisions of excessive defence analysis and learn from our country the Criminal Code should be maximum to replace the necessary level of expression at characterization of sinificant harm must be combined with the suppression of unlawful acts against the effectiveness and the degree of analysis to make judgments, should be weakened at the object of criminal protection againstthe people, to permit on subjective well in case of emergency did not expect the defense the consequences of orientation, in the main should be provided for mental patients intermittently sane at the time of the criminal liaility excessive defence, full 14 years of dissatifaction with 16 years of age is not criminally responsible excessive defence. Research excesive defence be able to practice the administration of justice provide a theoretical basis, and improve citizens who make the struggle against illegal enthusiasm, there is conducive to maintaining social order.Key Words：unlawful attack；legal interest；necessary minimum；great damage；excessive defence浅析防卫过当在现实生活中，有些行为在形式上好像符合某罪的犯罪构成要件，实质只具有较轻的社会危害性，其与一般的犯罪有着较大的差别，防卫过当即是如此。对防卫过当进行讨论，有利于增强公民进行正当防卫的积极性，鼓舞人们进行正当防卫，让不法侵害行为对受害...
