The invention discloses an attribute disc rotating method for TCM (traditional Chinese medicine) medical history syndrome differential diagnosis. The method comprises the steps: firstly designing a disc with n groups of elements, wherein the disc is used for storing the TCM medical history syndrome differential diagnosis attributes; secondly obtaining the positions D(Ki) of the syndrome differential diagnosis attributes in the disc rotation through TCM medical history syndrome differential diagnosis attribute pointers Ki; thirdly constructing a similarity matrix between each pair of conflict addresses D(Ki) and D(Kj) on the disc and the correlation matrix C(i, j) between TCM medical history syndrome differential diagnosis symptoms and syndrome differentiation elements; finally constructing a TCM medical history syndrome differential diagnosis rule reduction optimal target model, carrying out the syndrome differential diagnosis rule attribute reduction of the model through employing the Skowron differential matrix principles, and extracting an optimal diagnosis rule set of the correlation between the diagnosis symptoms and the syndrome differentiation elements. The method can accurately extract the correlation between the TCM medical history syndrome differential diagnosis symptoms and syndrome differentiation elements, and has a better positive effect for the qualitative and quantitative intelligent analysis of the TCM medical history syndrome differential diagnosis.