A protective cover for locking to a jack module includes a main body for inserting into the jack module and having two openings, and two elastic arms for locking the protective cover to the jack module and having a first engaging unit each. A removing tool for unlocking and removing the protective cover from the jack module includes a handle portion and two arms. The arms respectively include a front cam surface for inserting into the main body to deflect the elastic arms and unlock the protective cover from the jack module, and a second engaging unit formed behind the cam surface for engaging with the first engaging unit, allowing a user to remove the protective cover from the jack module. The protective cover and removing tool respectively integrate the unlocking and removing functions into one structurally simplified device and is more convenient for use.