This study is to explore the rule of acupoint heat-sensitization within patients who suffer Bell's palsy. Probe the rule of acupoint heat-sensitization within patients suffer Bell's palsy by recording the phenomenon and contrasting the frequency of acupoints, meridians, patterns of manifestation between healthy control volunteers and patients. We found that there was statistical difference between two groups on the frequency of acupoint heat-sensitization phenomenon (P<0.01), but not among different types of TCM syndrome when compared on the occurrence rate, patterns of manifestation (the top five patterns: blended sense, diathermanous sense, thermolytic sense, orderly transmission along channels, enjoying the thermal sensation), distribution of meridians (the top five channels: meridian of FOOT-YANG MING, HAND-SHAO YANG, FOOT-SHAO YANG, HAND-TAI YANG, HAND-YANG MING) and distribution of acupuncture points (the five top points: YIFENG(SJ17), XIAGUAN(ST7), QUANLIAO(SL18), YANGBAI(GB14), HEGU(LM)) (P>0.05). Thus we conclude that the frequency of acupoint heat-sensitization phenomenon within Bell's palsy patients is higher than normal volunteers, and the difference of patterns of manifestation, distribution of acupoints and meridians are all associated with channels, but not with the TCM syndromes.