Abstract: Harmonious interpersonal intercourse is the important component of a harmonious society. Besides, research of harmonious interpersonal contacts is of great significance for the construction of a harmonious society. Chinese traditional thinking culture contains a lot of thinking of harmonious interpersonal intercourse. Unique thinking of Laozhuang promotes interpersonal harmony, trying to remove interpersonal conflict. They consider "grace", "content with one's lot", "trust", and "to take peace treasure" etc. moral principles of harmonious interpersonal contacts. They are important values for the society today. They are beneficial to social conflicts and interpersonal conflict, to dilute the utilitarian among people, and to consider honor and treasure reasonable.