In World of Warcraft, jewelry is an accessory of equipment, which can be embedded in equipment to enhance the character's attributes. Blood therapy jewelry focuses on providing additional health recovery, which is helpful to quickly restore health in battle and enhance the survivability of characters. The specific effect of this kind of jewelry will be influenced by many factors, such as game version, jewelry quality and so on, so players need to make a reasonable match according to the current game environment and role needs when choosing jewelry.