A shrinkage control material for sea food or meat including at least one member selected from the group consisting of a whole fat soybean flour having a nitrogen solubility index (NSI) of 70 to 93, a defatted soybean flour having a nitrogen solubility index (NSI) of 70 to 93, a soybean milk flour having a nitrogen solubility index (NSI) of 70 to 93 and a soybean whey flour.一種抑制海鮮類收縮用素材,含有:選自於由氮水溶指數(NSI)為70~93之全脂大豆粉、氮水溶指數(NSI)為70~93之脫脂大豆粉、氮水溶指數(NSI)為70~93之豆漿粉及大豆乳清粉末所構成群組中之1種或2種以上物質。