The invention discloses a novel auxiliary frame installing bush. The novel auxiliary frame installing bush is simple in structure, low in manufacturing cost and high in practicability, and comprises an inner sleeve, a rubber buffering structure and an outer sleeve, the rubber buffering structure is arranged on the exterior of the inner sleeve, the outer sleeve sleeves the inner sleeve, a top buffering block is arranged on one side of the inner sleeve, a lateral open groove is formed in one side of the top buffering block, a longitudinal open hole is formed in one side of the lateral open groove, and a bottom buffering block is arranged at the bottom of the inner sleeve. Under the synergistic effect of all components of the novel auxiliary frame installing bush, the problem is solved that when a vehicle is driven, longitudinal comfort is poor during longitudinal impact, the roll stiffness of the vehicle is considered, meanwhile, the lateral comfort of the whole vehicle is improved through the designed half-open groove, the practicability of the bush is improved, a lot of costs are saved, and the novel auxiliary frame installing bush is suitable for application and popularization.