This kit provides a simple, fast and efficient method to extract DNA from trace samples, and is suitable for fresh or frozen animal tissues, hair, nails, trace blood, trace saliva, urine, bones, teeth, etc. sample. After cell lysis, DNA is bound to the surface of silicon-coated magnetic beads. After rinsing, highly pure DNA is eluted in deionized water. The purified DNA has good purity and high integrity.