In this study, try to made inhomogeneous anti-reflective structure on the PMMA/glass-fiber. The change of the physical structure of the resin surface, increase the film's transmittance rate. Will use the argon plasma's etching to produce the structure, plasma power (270, 240, 210 w), time (30, 24, 18, 12, 6 sec), distance (19, 5.5 cm). Discuss the effects of reflectance and transmittance. In this study, the best parameter of process is 5.5cm, 210w, 30sec, the transmittance rate increase about 2.3%. But when the distance is 5.5cm, plasma power is 210w, time 6sec, has the highest consequent. The so different processing time of two parameters, but the increasing of transmittance's rate is similarly.