A surface treatment method for a fluororesin molded body, which is a method for treating a surface of an ETFE molded body by using a glow discharge generated by a pulsed electric field having a voltage-rising time of at most 10 μsec in a nitrogen atmosphere under a pressure in the vicinity of atmospheric pressure;which comprises carrying out a plurality of glow discharge treatments at intervals of at least 0.01 sec so that the discharge density of each of the glow discharges is from 40 to 200 W·min/m2, and that the total discharge density of the glow discharges is from 220 to 800 W·min/m2. Further, an ETFE molded body subjected to a surface treatment by the surface treatment method.