Objective To explore the effect of alar cartilage transplantation on postoperative nasal tip morphology and nasal physiological function in patients undergoing rhinoplasty for nasorostral hypertrophy. Methods A total of 80 patients who underwent rhinoplasty for nasorostral hypertrophy in Ningbo Haishu Ximei Medical Cosmetic Clinic from January 2023 to January 2024 were selected as the research subjects, and they were divided into the control group and the experimental group by the random number table method, with 40 patients in each group. The control group received traditional nasal tip rhinoplasty, and the experimental group received nasal tip rhinoplasty assisted by alar cartilage transplantation. The nasal tip morphology, nasal physiological function and complications were compared between the two groups. Results The scores of nasal tip height, width and alar morphology in the experimental group at 3 months after surgery were better than those in the control group (P <0.05). The nasal ventilation volume, olfactory threshold and nasal cavity humidity in the experimental group at 3 months after surgery were better than those in the control group (P <0.05). The incidence of complications in the experimental group was 12.50%, which was lower than 30.00% in the control group (P <0.05). Conclusion The application of alar cartilage transplantation in patients undergoing rhinoplasty for nasorostral hypertrophy can effectively improve the nasal tip morphology, promote the recovery of nasal physiological function, and is also beneficial to reducing the incidence of complications, which is worthy of clinical a pplication.