Abstract: ²³⁵U enrichment in uranium samples were measured and verified using the γ-spectrometry and special PC/FRAM code. Different plots on two uranium targets were measured, which was selected randomly. The results show that the relative deviation between measured ²³⁵U enrichment and declared value is less than 3%, thus it can be concluded that γ-spectrometry is efficient in verifying ²³⁵U enrichment in uranium samples. This method could provide some references for measurement of nuclear material.