The invention discloses an integrated arm frame, which comprises a bottom knuckle arm, a top knuckle arm and at least one knuckle of middle arm positioned between the bottom knuckle arm and the top knuckle arm. The sizes of cross sections of the middle arms are equal; the middle arm is a truss structure and comprises four main chords and web rods positioned among the main chords; and the widths of the cross sections are larger than the lengths of the main chords. The arm frame has sufficient bearing capacity, can meet transportation size requirements, and provides favorable conditions for the development of a crane towards ultra-large type. The invention also discloses a crane with the integrated arm frame.