[en] The analgetic efficiency and adverse effect of ⁸⁹SrCl₂ treatment were observed in 69 patients with metastatic bone tumor from different primary foci. Of 69 patients, pain disappeared completely and metastatic lesions shrinked and disappeared partly in 32 cases; pain abated apparently and analgetic drugs were stopped or reduced in 30 cases; and inefficacy in 7 cases. Of 39 died patients, except the ineffective in 7 cases, in the remaining patients either pain abated, analgetics stopped, reduced or life quality improved obviously. (authors)