Abstract:G-bands in prometaphase and metaphase chromosomes of Cunninghamia lanceolata collected from Huitong county in Hunan province, Rongshui county in Guangxi Zhuang Autonomous Region, and Shaowu county in Fujian province, were induced successfully by appling a improved ASG method. The stripes of bands were clear and in a large number,distributed along the whole length of chromosomes. Band stripes in homologous chromosomes were comparatively similar in numbers, distribution, and size. But the character of band patterns were different among non-homologous ones. There were articulate phenomena in distribution of band stripes. Each articulation separated by light stain area was mostly consisted of two band stripes which were adjacent closely. At the phase of karyokinesis, band stripe numbers and distribution in homologous provenances were roughly similar.