Objective To study Chinese medical pattern distribution of chronic hepatitis B（HB）.Methods Totally 522 articles on Chinese medicine for chronic HB were retrieved and estimated

aiming at pattern distribution evaluation.Results The top eight patterns according to frequency were:liver depression and spleen defficiency

liver-kidney yin deficiency

spleen-kidney yang deficiency

static blood obstructing the network vessels

damp-heat obstructing the center

liver-gallbladder damp-heat

qi stagnation and blood stasis

and liver depression and qi stagnation.Damp-heat causing internal obstruction consisted of damp-heat obstructing the center

liver-gallbladder damp-heat

damp-heat brewing and binding

damp-heat brewing internally and damp-heat brewing in the spleen.Conclusion Primary patterns of chronic HB are liver depression and spleen defficiency and damp-heat causing internal obstruction.