The potato starch,corn starch and pea starch were used as compare objects to study the property of oat starch such as solubility,distensibility,freezing-thawing stability,blue value,transparency,viscosity and gelatinization.The results indicated that oat starch has higher solubility and distensibility than corn starch and pea starch,and higher blue value than potato starch and corn starch,but its freezing-thawing stability and transparency were lower than potato starch.