The invention relates to a bonding, heating and curing device for a rail insulation joint. The bonding, heating and curing device comprises a tank body (1) and an electrical equipment control box (2), wherein the tank body (1) is a hollow semi-cylinder; the electrical equipment control box (2) is arranged at the right end of the tank body (1); a cavity (3) is formed in the hollow inside of the tank body (1); the tank body (1) comprises a casing (1.1), a thermal insulation body (1.2), a heating body (1.3) and a liner (1.4) from outside to inside, and the heating body (1.3) is connected with the electrical equipment control box (2). The application of the bonding, heating and curing device comprises preheating of an insulating clamp plate and component glue A of a high-strength bonding agent, rail preheating and gluing, mounting of the insulating clamp plate and thermal-insulation curing. According to the bonding, heating and curing device for the rail insulation joint, the construction time is shortened and the in-site bonding quality is improved in a low-temperature environment.