ELECTRICAL CONNECTION BOX AND WIRE HARNESS

An electrical connection box includes: a housing; and a lower cover that closes a lower part of the housing, in which the housing includes an electric wire bundle holder whose lower side open so as to be able to allow insertion of a bonder cap of an electric wire bundle in a state where the electric wire bundle is covered with the bonder cap, the lower cover includes a deep bottom part having a drainage hole; and a shallow bottom part located above the deep bottom part below the electric wire bundle holder, with the shallow bottom part being formed to include an inclined surface inclined downward toward the deep bottom part, and a state where the bonder cap is inserted into the electric wire bundle holder is maintained on the inclined surface of the shallow bottom part on the lower cover.