The invention relates to a multi-angle wire fixing device for an electric power cabinet, and discloses a wire fixing device which is wide in angle adjustment range and solves the problems of fixed-point fixation and angle adjustment in only one plane. The one-dimensional angle of a wire harness can be adjusted by rotating a rotating sleeve, the two-dimensional angle of the wire harness can be adjusted by pulling a pull buckle to rotate a rotating frame, and thus, multi-angle adjustment and fixation is achieved. The device is characterized in that two outer fixing bases are fixedly arranged ona fixed floor and are parallel to each other; arc-shaped grooves are formed in the tops of the outer fixing bases; two sliding rails are arranged on the groove wall of each arc-shaped groove and located at the edges of the two sides of the arc-shaped groove respectively; the two ends of an inner sliding sleeve are arranged in the arc-shaped grooves of the two outer fixing bases in a sleeved mannerrespectively, and the inner sliding sleeve is of a tubular structure with a notch; and four sliding grooves are formed in the outer side face of the inner sliding sleeve, and the four sliding groovessleeve the sliding rails on the two outer fixing bases in a one-to-one-one-one correspondence mode.