Channel-point diagnosis is an important basis of acupuncture treatment. The diseased region and the nature of the lesion could be determined and differentiated by inspection of channel and collateral. The condition of the disease could be understood by point palpation from the aspects of temperature

abnormal changes of the stress of blood vessel retroacting finger

as well as the feeling of point pressed. Taking ancient medical books as the entry point

the authors collect the ancient literature basis of channel-collateral inspection and palpation

understand the development of channel-collateral and provide theoretical evidence for modern acupuncture clinical application.