The invention relates to a multi-electrode fast insulation detector, which comprises a detection electrode (1), a detection circuit (2) connected at the front end of the detection electrode (1), indicating lamps (3) arranged on the detection circuit (2) and an operating handle (4) connected at the tail end of the detection circuit (2), wherein the detection electrode (1) is formed by arranging 10 sigmoid-shaped electrode slices (1.1) in a parallel manner, the front ends of the electrode slices slightly upwarp, and the tail ends are fixedly connected with the detection circuit (2); 9 indicating lamps (3) are connected at the upper part of the detection circuit (2) side by side and arranged in a mode of being alternating with the electrode slices (1.1), and the insulation performance of a detected object can be determined through color variations of the indicating lamps; and the operating handle (4) is connected with a power line. The multi-electrode fast insulation detector has the advantages of high detection speed, convenient use and high detection accuracy.