In order to give a necessary information for the research on Bi system superconductor, the newest results of phase relations in Bi-Pb-Sr-Ca-Cu-O system since 1991 have been reviewed, which include Ca-Cu-O ternary, Sr-Cu-O ternary, Bi2O3-CuO pseduo-binary, (Bi, Pb)2Sr2CuOx-CaCuO2 pseduobinary, Bi2O3-CaO-CuO pseduo-ternary. Bi2O3-SrO-CaO pseduo-ternary and Bi2O3-SrO-CuO-MO(M =Ca, Pb) pseduo-quarternary system. In addition. the new result of Ag-Cu-Pb-O system has also been discussed which is related with Bi(2223) / Ag tape and Ag-doped Bi-based Superconductor.