Provided is an electrical junction box that enables appropriate protection of a bus bar and also enables downsizing. The electrical junction box includes a terminal reception block (11) that accommodates a connection terminal, and a casing (12) that accommodates the terminal reception block (11). The terminal reception block (11) is configured such that a bus bar (19) is inserted into the terminal reception block (11) and an end portion of the bus bar (19) at the side opposite to the direction of insertion protrudes from the terminal reception block (11). The casing (12) includes a protector (20) that is configured to cover the end portion of the bus bar (19) protruding from the terminal reception block (11). Making the terminal reception block (11) accommodated in the casing (12) causes the end portion of the bus bar (19) to be covered with the protector (20).