There has long been a dispute over the tectonic" correlation between the western Chinese Tianshan and the Tianshan west of it in the former U. S. S. R. For example, some Chinese geologists advocate the central Tianshan sensu lato, some propose the Central Tianshan sensu stricto, i. e. the so-called the Central Tianshan crystalline zone or Tianshan central uplift zone. Some geologists of the former U. S. S. R. maintain that an independent Central Tianshan should not be geologically defined, while most of them still suggest an independent Central Tianshan. The paper mainly makes a tectonic correlation between the western Chinese Tianshan and the former Soviet Tianshan, especially a correlation of main faults. Also the paper discusses the tectonic attribute of the Central Tianshan and collision between the Tarim plate and the Kazakhstan plate.