In this work, the effect of oxyfluorination on dyeability of low-density polyethylene (LDPE) film was studied in terms of surface analysis and contact angle measurements. The compositions of a mixed F$_2$-O$_2$ gas were varied, 80-0, 70-10, 60-20, 40-40, and 10-70, by pressure ratio. Surface characteristics, including the functional groups, and wettability of the LDPE rim were confirmed by FTIR-ATR, XPS, and contact angle analyses. As a result, the oxyfluorinated LDPE film led to a decrease in water and diiodomethane angles, mainly due to the increase in oxygen functional groups and the decrease in C-F groups with the oxygen pressure. From the dyeability test, it was found that the oxyfluorination played an important role in the wettabilty for water and diiodomethane, led to an improvement of dyeability to dispersive and basic dyeing agents. Consequently, mixed fluorine treatment on LDPE was a suitable method for modifying the polymer surfaces.