A working machine support belt (1) includes: a back plate portion (2)； a left shoulder belt (3) and a right shoulder belt (4)； a waist belt (5)； a left suspender band (6) that connects a front lower portion (3a) of the left shoulder belt (3) and a left rear portion (5a) of the waist belt； a right suspender band (7) that connects a front lower portion (4a) of the right shoulder belt (4) and the right rear portion (5b) of the waist belt； a left side belt (8) that extends left-downward from the back plate portion (2), turns forward, and is connected to a left end portion (5L) of the waist belt (5)； a right side belt (9) that extends right-downward from the upper portion of the back plate portion (2), turns forward, and is connected to a right end portion (5R) of the waist belt (5)； a locking member (10) that locks the left end portion (5L) and the right end portion (5R) of the waist belt (5)； and a pad member (16) supported via a rear support band (13) and a front support band (14), and provided with a hook (15) that supports a working machine.
