The invention provides a glass fiber flexible electric tracing band. The glass fiber flexible electric tracing band comprises two buses which are symmetrically distributed, two guiding line insulatinglayers which are connected to the buses in a sleeving mode, a transparent sheath which is connected to the two guiding line insulating layers in a sleeving mode and heating wires which are connectedto the transparent sheath in a sleeving mode; one ends of the heating wires are connected with a conductive connecting point, and a clamping strip abuts against the opposite sides of the two guiding line insulating layers and comprises a plurality of insulating blocks which are connected in an end-to-end mode; and a plurality of rotating shafts are connected to the centers of the insulating blocksin an inserting mode, and two ends of the rotating shafts are connected to the two guiding line insulating layers correspondingly. According to the glass fiber flexible electric tracing band, the deficiencies of the prior art are overcome, the design is reasonable, the structure is compact, and the problems of that an existing electric tracing band is damaged caused by the high temperature due tothe fact that the flexibility is low, and meanwhile, no good temperature control device is arranged is solved; and the flexibility of the electric tracing band is improved through a plurality of methods, the electric tracing band is suitable for being arranged in a curved pipeline, meanwhile, a temperature control device is additionally arranged, and the practicability of the electric tracing band is improved.