Objective To explore the application value of high-density porous polyethylene implants in nasal plastic surgery. Methods A total of 106 patients undergoing comprehensive nasal plastic surgery in our hospital from May 2019 to August 2021 were selected as the research objects and randomly divided into the control group and the observation group, with 53 cases in each group. The control group was treated with autologous rib implantation, and the observation group was treated with high density porous polyethylene implants. The clinical operation indexes (operation time, recovery time), excellent and good rate of plastic surgery, nasal indexes (nasal height/nasal length ratio, nasal lip angle), complication rate and pain score were compared between the two groups. Results The operation time and postoperative recovery time of the observation group were shorter than those of the control group (P＜0.05). The excellent and good rate of plastic surgery in the observation group was 94.34%, which was higher than 86.79% in the control group, and the difference was statistically significant (P＜0.05). The ratio of nasal height/nasal length in the observation group was higher than that in the control group, and the nasolabial angle was lower than that in the control group, the difference was statistically significant (P＜0.05). The incidence of complications in the observation group was 5.66%, which was lower than 15.09% in the control group, and the difference was statistically significant (P＜0.05). The pain score of the observation group was lower than that of the control group, and the difference was statistically significant (P＜0.05). The treatment satisfaction of the observation group was 96.23%, which was higher than 84.91% of the control group, and the difference was statistically significant (P＜0.05). Conclusion The application effect of high-density porous polyethylene implants in nasal plastic surgery is ideal, which can reduce the pain, shorten the operation and recovery time, reduce the incidence of complications, improve the ratio of nasal height to nasal length and nasal lip angle, and achieve the ideal plastic effect.