备受人们关注的“姐姐勒死弟弟”一案,最终姐姐以故意杀人罪被判刑而落下帷幕。但姐姐在特殊状况下,勒死整日酗酒闹事、威逼母亲的弟弟,是属正当防卫,还是故意杀人?如是故意杀人,对姐姐应否从轻处罚? Much attention has been paid to the case of “Sister Leaving Brother”, eventually the sister was sentenced for intentional homicide and came to an end. However, under special circumstances, my sister strangled all day drinking abuse and forced her mother’s brother to be a legitimate defense or intentional murder? In the case of intentional homicide, should my sister be given a lighter punishment?