A leuco dye film dosimeter for dose measurement on ,60,Co gamma radiation processing was developed. The matrix material polyvinyl butyral （PVB） with leuco malachite green （LMG） and additive halogenated compounds （RX） were manufactured as the PVG dosifilm. Its response （ΔA/L vs dose） at 627 nm showed a linearity （correlation coefficient r,>, 0.999） in the dose range from 0.5 to 80 kGy. The calibration coefficient of temperature during irradiation was+0.053/℃. The response increased slightly with the increasing of relative humidities （0~96.4%）; and the the calibration coefficient was +0.006/Δ r. h （%）. From 54.9% to 96.4% the deviation was less than 4%. The PVG dosifilm was stable before and after irradiation when it was stored in the dark at a given relative humidity. The deviation of response on PVG dosifilm kept in a brown desiccator was less than 4% after 40 days. It was suitable to serve as a routine dosimeter.