The invention relates to an Ag(Ti,Zr) / rare earth crystalline silicon solar cell composite sizing agent and a manufacturing method of the Ag(Ti,Zr) / rare earth crystalline silicon solar cell composite sizing agent. The Ag(Ti,Zr) / rare earth crystalline silicon solar cell composite sizing agent comprises, by mass, 0.1-0.4 parts of glass binders, 7.5-8 parts of ultra-fine silver powder, 0.2-0.5 parts of mixtures of ultra-fine TiO2 powder and ultra-fine ZrO2 powder, 0.1 parts of rare earth powder, 1-1.4 parts of organic binders and 0.3-0.4 parts of diluents. By means of the Ag(Ti,Zr) / rare earth crystalline silicon solar cell composite sizing agent and the manufacturing method, a small amount of rare earth addition Ce, Eu or Gd is doped into the sizing agent containing Ti and Zr, the rare earth is a medium for forming Ag / Si contact, the silver-silicon contact in the sintering process of cell manufacturing is compact, and the contact resistance and the electrode attachment force are further reduced. Meanwhile, the contact resistance between silk screen printing silver paste and a silicon substrate is reduced, the electrode attachment force is improved, consumption of metal silver is reduced, the crystalline silicon solar cell efficiency is improved, and the cell cost is reduced.