Effects of soybean varieties and tofu powder processing on the qualities of the tofu powder was studied. Soybean varieties (CM 60, SJ 5 and ST 2), commercial coagulants (2.2% CaSO4, 3.0% CaCl2, 2.2% MgSO4 and 3.0% MgCl2) and drying methods (tray dryer, drum dryer and freeze dryer) were studied with respect to their effects on the qualities of tofu powder produced. Soybean varieties influenced the qualities of soybean and soymilk and also affected the functional properties of tofu powder. Tofu powder obtained from CM 60 gave a high yield and good functional properties. Calcium ion coagulant induced tofu powder gave a high solubility and magnesium ion induced tofu powder gave a high emulsion activity. The tofu powder which was freeze dried had a high solubility and high emulsion activity but low emulsion stability.