Abstract: The paper be based on the 761 skull of mole rat (Myospalax bailey) ♂:355,♀:406) in 1977, random sampling was males'and females'skulls 120, respectively.Each skull has 12 indexes,i.e.(1)Greatest length of skull, (2) Nasal length, (3)Premaxilla width, (4) Interorbital width, (5) Head back width, (6)Parietal crest width, (7)Frontal length, (8)Maxillary incisors length, (9)Maxillary incisors width, (10)Zygomatic width, (11)Body weight,(12)Body length in the order the random variable y₁1,y₂,y₁₂ were used to indicate. This is a 120x12 matrix of order(Y), and it was been canonicity in the collmn.After canonicity,the random variable y₁1,y₂,y₁₂ were written x₁, x₂,x₁₂,then X=(x_ij).