The utility model discloses a heater of shaft sleeve, the problem of the technique is solved: technical defect problem to background art intermediate shaft sleeve heating method. The technical scheme who adopts: heater of shaft sleeve, including the inside sealed container that sets up the propagation medium, set up at the inside heater of container and set up and measure the temperature sensor who propagates medium temperature in inside being used for of container, outside the container is stretched out to heater one end and through intelligent temperature controller connecting plug, temperature sensor's signal end stretches out outside the container and connects intelligent temperature controller, on the lateral wall of container the evagination set up one with the communicating filler of container inner chamber. The advantage, this heater of shaft sleeve, economical and practical, it is simple and convenient, do not receive space limitation.