An electrical connection box comprising: an electronic component with which an electrical wire (We) is electrically connected; and an insulating housing storing therein the electronic component and in which a plurality of an electrical wire bundle (Web) and/or the electrical wire (We) are routed therein, the electrical wire bundle (Web) being formed by bundling a plurality of the electrical wires, wherein the housing is provided with an electrical wire drawing path projecting toward outside and causing a plurality of at least one of the electrical wire bundle (Web) and the electrical wire (We) to be drawn from inside to outside, the electrical wire drawing path includes a first wall member including two side portions (31a, 31b) extending in a projecting direction of the electrical wire drawing path, a second wall member disposed to be opposed to the first wall member with an interval, a first side wall member projecting from one side portion of the side portions of the first wall member in a direction crossing an extending direction of the side portion and toward the second wall member, and a second side wall member projecting from the other side portion of the side portions of the first wall member in a direction crossing an extending direction of the side portion and toward the second wall member, and at least one of the first side wall member and the second side wall member is formed as an elastically deformable member enabling change of volume of an electrical wire routing space surrounded by the first wall member, the second wall member, the first side wall member, and the second side wall member. an electronic component with which an electrical wire (We) is electrically connected; and an insulating housing storing therein the electronic component and in which a plurality of an electrical wire bundle (Web) and/or the electrical wire (We) are routed therein, the electrical wire bundle (Web) being formed by bundling a plurality of the electrical wires, wherein the housing is provided with an electrical wire drawing path projecting toward outside and causing a plurality of at least one of the electrical wire bundle (Web) and the electrical wire (We) to be drawn from inside to outside, the electrical wire drawing path includes a first wall member including two side portions (31a, 31b) extending in a projecting direction of the electrical wire drawing path, a second wall member disposed to be opposed to the first wall member with an interval, a first side wall member projecting from one side portion of the side portions of the first wall member in a direction crossing an extending direction of the side portion and toward the second wall member, and a second side wall member projecting from the other side portion of the side portions of the first wall member in a direction crossing an extending direction of the side portion and toward the second wall member, and at least one of the first side wall member and the second side wall member is formed as an elastically deformable member enabling change of volume of an electrical wire routing space surrounded by the first wall member, the second wall member, the first side wall member, and the second side wall member.