A novel gel polymer electrolyte based on poly(acrylic acid-g-CTAB)-polypyrrole is prepared. Based on the gel electrolyte, a flexible quasi-solid-state dye-sensitized solar cell (DSSC) is fabricated by using a low-temperature filming technique. The researches by scanning electron microscopy, thermal degradation analysis and cyclic voltammetry show the effect of the gel polymer electrolyte on flexible DSSC. Owing to high conductivity and the catalytic function of polypyrrole for I-/I-3 redox reaction for the gel electrolyte, the flexible quasi-solidstatedye-sensitized solar cell shows a light-to-electric energy conversion efficiency of 1.28%, under simulated solar light irradiation with intensity of 100 mW/cm2 [air mass (AM) 1.5].