the present invention relates to a fluorine - containing polymer comprising a structure represented by the following general formula , as well as the preparation process and use thereof . according to the technical solution of the invention , a novel fluorine - containing polymer with a larger molecular weight and an aromatic side group is obtained through a simple reaction , and it can be used as a non - ionic fluorine carbon surfactant , and especially , is applicable to the preparation of a pigment dispersion . additionally , the invention further relates to a pigment dispersion and the preparation process thereof . in the invention , a little non - ionic fluorine carbon surfactant is added into a traditional pigment dispersion , whereby the interface energy in the pigment dispersion system can be improved , and the aggregation and agglomeration of pigment particles are prevented , as a result , the particle diameter and viscosity are less changed with the lapse of time , and there is no precipitate occurred , therefore , the stability of the pigment dispersion is improved significantly .