Based on Yb3+-doped laser glass reported abroad,the Yb3+-doped glasses with higher emission cross section are obtained experimentally.In these glasses,the Yb3+-doped tellurogermanate,borate and niobosilicate glasses have emission cross sections over 1.9 pm2,the phosphate glass has lower cross section but longer fluorescence lifetime.The better spectroscopic properties should make these glasses to be candidates of gain medium for high average power and high peak power lasers.