Objective To study the TCM pattern distribution of perimenopausal insomnia（PI）and provide the basis for standard establishment of TCM pattern differentiation. Methods There were 117 patients with liver depression spleen deficiency pattern

296 patients with kidney deficiency liver depression pattern

14 patients with heart-spleen deficiency pattern

18 patients with heart-gallbladder qi deficiency pattern

21 patients with kidney yin-yang deficiency pattern

and another 21 patients with spleen-kidney yang deficiency pattern in 487 PI patients.The diagnostic information such as symptom

sign

tongue and pulse was collected and scored.The result was analyzed with factor analysis.The standardization of TCM pattern differentiation for PI was initially formulated.Results It was found from the first factor analysis that lack of energy

morning drowsiness

lassitude

forgetfulness and inattention could not be extracted by all patterns and they were the common condition factors in PI patients.The second factor analysis got six pattern factors such as kidney deficiency liver depression

liver depression spleen deficiency

spleen-kidney yang deficiency

kidney yin-yang deficiency

heart-gallbladder qi deficiency and heart-spleen deficiency according to factor load coefficient greater than or equal to 0.4.The scores of condition factors and pattern factors were compared between patients with different patterns.The judgment and division of primary and secondary symptoms in different patterns was set.Conclusion The common patterns of PI are kidney deficiency liver depression pattern

liver depression spleen deficiency pattern

spleen-kidney yang deficiency pattern

kidney yin-yang deficiency pattern

heart-gallbladder qi deficiency pattern

and heart-spleen deficiency pattern.The standardization of TCM pattern differentiation for PI is initially formulated.