张锡纯为中国近代名医，其临床经验丰富，论述脉学紧密联系临床实际。其毕生的治学经验和临证心得集中体现于代表著作《医学衷中参西录》，其有关脉诊的内容丰富而极具临床意义。脉诊是中医诊疗疾病预后的重要方法，通过体察脉象可以辨别人体脏腑气血的盛衰及邪正的消长等。脉诊是同病异治、鉴别寒热的关键因素，应该灵活运用脉诊，不可以偏概全、墨守成规。旨在通过分析《医学衷中参西录》有关脉诊的内容，探讨脉学之道，脉诊既微妙关键，同时也灵活多变。对于四诊之一的脉诊，应该谨熟于心且灵活运用。

Zhang Xichun is a famous doctor in modern China. He has rich clinical experience and his discussion of pulse is closely related to clinical practice. His lifelong academic experience and clinical experience are mainly reflected in his representative work " Yixue zhongzhong canxilu" , which is rich in content and of great clinical significance. Pulse diagnosis is an important method of traditional Chinese medicine diagnosis and treatment of disease prognosis. Vigorousness or wane of Qi and blood, and generation or eradication of pathogenic factors can be distinguished by observing the pulse. Pulse diagnosis is the key factor to treat the same disease differently and distinguish cold and heat, which should be used flexibly without any unilateral understanding or sticking to convention. Contents of Pulse-taking in " Yixue zhongzhong canxilu" is analyzed to explore the way of pulse diagnosis, which is not only subtle and crucial, but also flexible. Pulse diagnosis, one of the four methods of diagnoses, should be kept in mind and used flexibly.