The invention relates to a cable terminal manufacturing support frame, which includes a cable support plate. The cable support plate includes a main plate and an auxiliary plate. The upper surface ofthe main plate is provided with a cable fixing groove. The auxiliary plate is connected with the main plate and is provided with a cable terminal accommodation groove. The bottom of the cable terminalaccommodation groove is provided with an air charging port for filling the cable terminal accommodation groove with gas, the gas being selected from dry air, inert gas, nitrogen and carbon dioxide. Dry air can be continuously injected into the cable terminal accommodation groove to enable cable terminals to be isolated from an ambient atmosphere with high humidity, high dust and high corrosiveness, and therefore the cable terminals can be manufactured in such an environment.