The invention relates to a high-temperature pressuring thermobalance. The high-temperature pressuring thermobalance comprises a tube type resistance furnace (4), a balance (12) and a sample taking and placing system, wherein the tube type resistance furnace (4) is arranged inside a pressure tank (3), the middle part of a reaction tube (5) is located inside the tube type resistance furnace (4), a gas inlet (2) and a thermocouple interface (22) are formed at the lower part of the reaction tube (5), a pressure regulating hole is formed at the upper part of the reaction tube (5), the bottom end of the reaction tube (5) is connected with a lifting rod (1), a motor (23) rotates to enable the lifting rod (1) and the pressure tank (3) as well as the reaction tube (5) to move up and down, and the top end of the reaction tube (5) is connected with the sample taking and placing system by a ball valve (6). The high-temperature pressuring thermobalance has the advantages of simple structure and convenience in operation, and is suitable for operation in corrosive atmosphere and various atmospheres.