The invention discloses a heat treatment method for a molten salt corrosion-resistant nickel-based high-temperature alloy short link chain. The heat treatment method is divided into two stages. Destressing heat treatment is performed in the first stage, namely the welded short link chain to be treated is heated from room temperature to 700 to 900 DEG C at speed of not higher than 55 DEG C per hour, and then heat is preserved for 0.5 to 6h. Solid solution heat treatment is performed in the second stage, namely the temperature is increased at speed of 150 to 220 DEG C per hour to 1,000 to 1,200DEG C, the heat is preserved for 10 to 60min, and after heat preservation, air cooling or water cooling is performed. The invention also discloses the molten salt corrosion-resistant nickel-based high-temperature alloy short link chain. According to the method, the short link chain can be enabled to slowly release stress to inhibit formation of cracks, and in addition, the structure can be recovered to eliminate processing hardening and avoid reduction in the mechanical performance to further improve the safety and the reliability of a molten salt reactor.