目的：测定本校生命学院大三本科生苯硫脲(PTC)味盲基因频率。方法：采用阈值法测定250名本科生对PTC的尝味敏感性。结果 味盲率为10.4%，味盲基因频率为0.356，尝味基因频率为0.644。结论：尝味能力与民族、地理位置以及某些疾病相关。 Objective: To determine the taste-blindness gene frequency of PTC among undergraduate students in our college of life science. Methods: To adopt the way of deciding taste-blindness with threshold to determine the sensitivity to the taste on PTC of 250 juveniles. Result: The taste-blindness rate was 10.4%, the taste-blindness gene frequency was 0.356 and the taste frequency was 0.644. Con-clusion: The PTC tasting ability is relevant to nationality, geographic position and some diseases.