Abstract: Objective: To investgate the effect of heat- moisture treatment temperature on physicochemical properties of porous starch.Methods: the temperature of porous starch was adjusted to 110,115,120 ℃,then heat- moisture treatment was performed at 15% moisture for 1 h,the effect of the heat- moisture treatment on those porous starch were studied.Results: Under the condition of the water bath temperature of 85 ℃ porous starch solubility and oil absorption rate of porous starch were increased with the increase of the heat- moisture treatment temperature,degree of swelling was decreased with the increase of treatment temperature,the light transmittance of porous starch paste were decreased with the increasing of treatment temperature,starch paste freeze- thaw stability,initial pasting temperature and heat paste stability were increased as the treatment temperature increasing,and the pasting peak viscosity was decreased with the temperature increasing of treatment. Heat- moisture treatment temperature on the crystalline structure of porous starch was not serious,its crystalline structure was still A type,with the temperature increasing its crystallinity was slightly lower,when the temperature was 115 ℃,the content of resistant starch was in porous starch was improved to 27.67%.Conclusion: heat- moisture treatment affected the properties of porous starch obviously,and the starch changes were somewhat different due to the different treatment temperature.