To provide an electric apparatus accommodation box to which a panel can be easily attached in an installation field without the need for screw work.

An angle frame 4, which carries and holds a panel 2 lower side, and rotary holding members 5, 5, which rotate in plane parallel to a rear plate and sandwich the panel 2 upper part from right and left, are attached to the reinforcing frame 7 formed on the rear plate 1d. The rotary holding member 5 has a panel holding piece for sandwiching the panel 2 and a reinforcing frame holding piece for sandwiching the reinforcing frame 7, and when the panel 2 upper part is sandwiched by rotating operation, a part of the rear plate 1d is sandwiched together.