Abstract: On the basis of imitating to make boring ornaments, the boring features left by using different methods were observed and recorded by microscope. So, the boring technique of the ornaments unearthed from the Xianren cave site, Haicheng was restudied and some opinions of the previous researchers were corrected. Besides, questions related to the identification standard, boring efficiency and the purpose of smoothing the root of teeth etc. were discussed.

Key words: Ornament; Boring technique; Xianren cave of Haicheng