The invention relates to a torsional vibration resonance frequency measurement method used for assessing dental implant stability, and a novel horn. The torsional vibration resonance frequency measurement method comprises the steps that: the novel horn is mounted; horn-dental implant system torsional vibration mode excitation is carried out; resonance signals are collected, and resonance frequency is analyzed. With the method dental implant stability can be detected, dental implant bone healing can be clinically continuously detected, and dental implant clinical reparation time selection can be guided. The novel horn adopted by the invention is composed of an anti-rotation horizontal double-wing part and a central bolt. With the novel horn, torsional vibration of the dental implant can be exited, and dental implant resonance frequency under the torsional vibration mode can be detected. Therefore, sensitivity to dental implant bone interface area bone rigidity is improved, non-related factor confounding effects are avoided, and dental implant stability is detected. A scientific and effective detection means is provided for continuous detection and researches on dental implant bone healing.