A novel seam-line removal method based on curve fitting is put forward. Firstly, the proposed method modifies the gray value around the original seam-line by curve fitting. And then the texture massage is added to the pixels which are obtained by the process of curve fitting. This step is aimed to avoid the character loss of gray changing. Thus, the gray value can change smoothly and the texture character can be remained as well. Finally, the result image with good sense of sight is got after weighted fusion and fine adjustment. Apart from that, a method for confirming the correction width is proposed according to the average gray difference between the two sides of the seam-line, and it is proportional to the gray difference. Experiment results show that the method is effective and easy to be realized. In addition to the elimination of sudden change in gray, the texture character of this method is better saved than that of the common methods. The seam-line is eliminated smoothly and the visual effect is good. The proposed method is also applicable especially when the difference of gray is above ten.