The procedures for preparation of thin sections of bone tissue and the ultrastru-ctures of ostoecyte and chondrocyte were reported in this paper.For the preparation of bone tissue, the double fixation method (prefixation with mixture of 5% glutaraldehyde and 4% paraformaldehyde, and postfisation with 1% osmic acid) and 4-5% EDTA-2Na as decalifying agent had been used. With this preparation method, satifactory results had been obtained.