目的:通过计算新的深度-时程氦氧常规潜水减压方案，为有效提高大深度氦氧常规潜水训练效率提供依据。方法:按照Haldane计算潜水减压表的经典模型，采用原计算60～120 m氦氧常规潜水减压表的过饱和安全系数，计算80、100和120 m/15 min 3种深度-时程的氦氧常规潜水减压方案；结合训练进行验证。结果:3种方案的减压总时间分别比相应深度/20 min方案缩短20、31和36 min；经54人次氦氧常规潜水验证，未出现减压病症状。结论:水下工作时间以5 min为一档，建立新的氦氧常规潜水减压表，可在保障潜水员安全的基础上有效提高潜水训练效率。“,”Objective:To calculate a new depth-time heliox conventional diving decompression scheme for improving the training efficiency of deep heliox conventional diving.Methods:Based on the classical calculation model of Haldane’s diving decompression scheme, we used its supersaturation safety coefficient for 60-120 m heliox conventional diving decompression scheme, calculated the decompression schemes for 80 m/15 min, 100 m/15 min, and 120 m/15 min depth-time diving, and verified them by training.Results:The total decompression time of the three schemes were shortened by 20, 31, and 36 min respectively than those of the depth/ 20 min scheme at the same depth. After 54 person/times heliox conventional diving trials, no decompression sickness symptoms were found.Conclusion:A new heliox conventional diving decompression scheme with every 5 minutes as an interval for underwater operation can effectively improve the diving training efficiency while ensuring divers’ safety.