Abstract: Changbaisong which is distributed (near the Second white River of Antu county) in Changbai mountain has the following names from the identification:1. Pinus funebris Kom. (1901)^[8];2. Pinus densiflora Sieb. et Zucc. f. sylvestriformis Takenou-chi (1942)^{[8] [9]};3. Pinus sylvestris Linn. var. sylvestriformis Cheng. et C. D.Chu (1979)^{[7] [7]};4. Pinus sglvestriformis (Takenouchi) Chien (1981)^[9];5. Pinus intermedia Gu (1983)^[10];6. Pinus densiflora Sieb. et Zucc. var. sylvestriformis (Take-nouchi) Ch. L. Wang (1982)^[11]. The internal wall of ray tracheid in Changbaisong wood structure has deep saw-teeth, and this, the author believes that it is much similar to Pinus sylvestris Linn. However, the hori-zontal wall of wood ray parenchyma cell has no pits, and there are bordered pits on the tangential wall of the tracheid in se-veral rows of late wood. From the points of the above, the author thinks that the Changbaisong has the features of P.densiflora Sieb. et Zucc. Obviously, the Changbaisong has the characteristics of the wood structure of the two pines, but it even more belong in P. densiflora Sieb. et Zicc. Therefore, we suppose that the Changbaisong should be named as P. densi-flora Sieb. et Zucc. var. sylvestriformis (Takenouchi) Ch. L.Wang.