This research measured hues of Bight Hall of normal people and various spleen disease patients with MPV Ⅱ micro spectrophotometer, and observed all groups' changes of wavelength reflectivity graph. The result showed that the highest reflectivity was in 580nm.The sequence of reflectivities was damp heat brewing in the spleen group>normal group>spleen failing to control blood group>spleen-qi deficiency group.The Sequence of luminosities of Bright Hall was damp heat brewing in the spleen group>normal group>spleen qi vacuity group>spleen failing t...