[Objective] The effect of the addition of soybean peptide and soybean protein on the physical property of starch in the process of its gelatinization and was researched.[Method] The soybean peptide and soybean protein affecting the viscosity,shear-resisting and agglutination of starch in the process of the starch gelatinization and coacervation were experimented.[Results] The maximum viscosity of starch gelatinization was as high as 30.72% after 1.00% macro protein was added;however,26.63% of the maximum viscosity was decreased after 1.00% soybean peptide was added.The addition of 1.00% soybean peptide could result in the crumble value being raised by 55.10% and the addition of 1.00% soybean protein,raised by 77.78%.The addition of 1.00% soybean peptide could promote the anabiosis being raised by 16.32%,while the addition of 1.00% soybean peptide could promote the anabiosis being decreased by 82.28%.[Conclusion] The soybean protein made the maximum viscosity of starch paste being increased,while the soybean peptide,being decreased.Both of them resulted in the shear-resisting capacity of starch pastes being reduced.The soybean protein was helpful for the formation of starch gel,and the soybean peptide was with very strong impediment to the formation of starch gel.