Effects of pretreatments including ice,freezing,heating at 100 ℃,and heating at 120 ℃ on the physical properties of fish bone pastes made from silver carp using wet milling were studied.Results showed that fish bone particles in the paste subjected to 120 ℃ heating before milling was the smallest with an average size of 164.11 μm.The increasing order of average particle size was sample subjected to freezing (317.40 μm),heating at 100 ℃ (343.47 μm) and ice (522.61 μm).Specific surface area of the fish bone particles in the paste subjected to 120 ℃ was significantly larger (P<0.05) than that of other three groups.Result of SEM showed that fish bone particles in the paste subjected to freezing was short-rod like with a smooth surface.Fish bone particles in the paste subjected to 120 ℃ was nearly spherical with a coarse surface.Compared with the samples added with ice and/or subjected to freezing,b,L*,water holding capacity,emulsion reactive index and emulsion stability of the paste subjected to 120 ℃ heating were significantly higher (P<0.05),while its viscosity was lower (P<0.05).