To analyze the distribution of pattern of atopic dermatitis (AD) in patients by traditional Chinese medicine (TCM), conditions and lesion characteristics, and explore the correlation of them. 314 cases of patients were included in the study, the pattern of AD by TCM high to low by frequency are hyperactive heart fire and spleen(Xin-Huo-Pi-Xu), spleen deficiency with dampness encumbrance(Pi-Xu-Shi-Yun), heat accumulation of the heart and spleen(Xin-Pi-Ji-Re), dampenss-heat in vivo (Shi-Re-Nei-Yun) and blood deficiency and wind-dryness (Xue-Xu-Feng-Zao), hyperactive heart fire and spleen (Xin-Huo-Pi-Xu) may be associated with the acute, infants and children phase of the disease, spleen deficiency with dampness encumbrance(Pi-Xu-Shi-Yun) may be associated with chronic, adolescent and adults phase.