This thesis is focused on the topic of justifiable defence and domestic violence. There is a comprehensive overview about justifiable defence in the first section. It is one of the circumstances to exclude illegality which is defined in § 29 in the Criminal Code. There are specified conditions when attack is treated as justifiable defence. If the statutory conditions are exceeded it is the excess. The second part of this thesis is dedicated to serious problem domestic violence. There are forms and features of domestic violence defined. Also consequences of domestic violence are mentioned. The third section describes the legal option to help victims of domestic violence. We create manual with some advices and recommendations. We trust that i...