Abstract: The Nanmu volcanic basin is located on the Linxi-Zhalantun polymetallic metallogenic belt in the middle-north section of Daxinganling Mountains. The investigation on its basement and caprock shows high uranium content with developed structures, which is favorable for the mobilization, migration and enrichment of uranium. The uranium mineralization on the surface is also good with large scale. From the above, it is concluded that the basin has the geological tectonic environment for volcanic uranium mineralization with good metallogenic conditions and prospecting potential.