An improved structure for a wire outlet cover, arranged at a sidewall of a carton receiving a network wire, includes a body and a collar. The body has a hollow cylindrical shape and includes an inlet end and an outlet end, wherein the body is, at the outlet end, provided with plural stop blocks, and wherein the body is, near the outlet end, provided with a stop flange. The collar has a hollow annular shape and is, at its internal edge, provided with plural axially-extended edges. The collar is assembled to the rear body, with the plural axially-extended edges stopped by the plural stop blocks, such that the collar and the stop flange are spaced apart for a predetermined distance for receiving the sidewall of the carton. Therefore, the network wire will not be twisted when entering into the wire outlet cover nor be twisted around the inlet end.