The research of group decision m ak ing is a fast2develop ing b ranch of decision theo ry, and at t ract ing increasing at ten t ion f rom ab road and hom e. Comp lete theo ry system of group decision m ak ing, how ever, hasn’t com e in to being. O n the basis of ou r p reviou s research wo rk, th is paper review s the developm en t of group decision m ak ing research m ain ly f rom the viewpo in t of p rocess o rgan izing. The inf luence of GDSS on perfo rm ance of group decision m ak ing is discu ssed f rom the viewpo in t of decision p rocess as w ell. A nd th rough the comparison betw een social cho ice theo ry and co llect ive decision m ak ing theo ry, a research f ram e of group decision m ak ing is also exp lo red ten tat ively in th is paper.