The invention relates to the field of forging of large die forgings, and discloses a thermal-covering process for thermal forging of a super-large titanium alloy whole frame die forging. The process includes the following steps of pre-heating a blank, coating the blank with a protective lubricant, heating the blank to a forging temperature and conducting heat preservation, covering the outer surface of the titanium blank with a covering material through a binder, placing the blank into an electric furnace again to be heated after thermal-covering is completed, and taking the blank out of the furnace to be forged after being heated to the forging temperature. The process is simple in operation, low in cost and capable of preventing the surface temperature of the blank from descending too fast in the transferring and producing procedures and ensuring the effect that the blank is at a high start-forging temperature during die forging; and material flowing of the forging is facilitated, the tonnage of equipment can be lowered, and the problems of poor filling and the non-uniform structure property of the forging during existing production of the super-large titanium alloy whole frame die forging can be solved.