Electric connection box

An electric connection box comprising:

• a frame having a cylindrical outer wall and having a housing space on an inner side of the outer wall;
• and
• a cover having a side wall fitted into a first end portion, which is one end in an axial direction of the outer wall, in the axial direction, wherein
• the first end portion of the outer wall has a plate-shaped protruded portion that is protruded in the axial direction,
• the protruded portion has a pair of side portions respectively placed at one end and another end in a width direction and extended in the axial direction,
• the side wall has a pair of edge portions in the axial direction, the edge portions respectively corresponding to the pair of side portions, and has a notch between the pair of edge portions,
• each of the pair of edge portions has a first facing surface and a second facing surface,
• the first facing surface abuts on the pair of side portions in a thickness direction of the protruded portion in a state in which the frame and the cover are not fitted, and
• the second facing surface faces the pair of side portions in the width direction and positions the cover with respect to the frame in a state in which the first facing surface abuts on the pair of side portions.