The invention discloses an insulating quick-mounting maintenance frame special for electric power. The insulating quick-mounting maintenance frame special for electric power comprises a crawling ladder I, a crawling ladder II, a pedal and a guardrail device; the crawling ladder I and the crawling ladder II comprise a supporting rod and a cross rod; the crawling ladder I and the crawling ladder IIare connected through a connecting rod and a sliding block; a sliding groove is formed in the crawling ladder II; the left end of the connecting rod is hinged and connected with a connecting rod fixing support at the lower end of the crawling ladder I; the guardrail device is arranged at the upper end of the crawling ladder I; the guardrail device comprises two guardrail fixing rods and two guardrail connecting rods; the pedal comprises a pedal I and a pedal II; the left end of the pedal I is hinged with a round rod arranged at the upper end of the crawling ladder I; a positioning groove is formed at the middle position of the cross rod at the upper end of the crawling ladder II; and a positioning pin mechanism is arranged in the cross rod at the upper end of the crawling ladder I. The insulating quick-mounting maintenance frame special for electric power is suitable for various power equipment maintenance environments, is simple in structure, can stretch out and draw back freely and can widen the working platform surface and the guardrail device.