The paper has researched on the morphological characteristics and analysis and comparison of different regions of different parts of walnut in Tibet. The results showed that three mean maximum diameter is 4.04cm and minimum is 3.11cm. Shell thickness is between 3.1 ~ 3.9mm. The highest protein content of Madaga is 21.85%. The protein content varied is from 15.1% to 21.85%. The highest fat of Basu 2 is 69.6%. The fat content varied between 61.7% ~ 69.6%. Basic on these researches, we selected eight priority systems.