From the thermal property of crosslinked rice starch, gelatinization temperature (onset temperature) should be increased in line with the degree of crosslinking (Varavinit, Hanwasdi, & Shobsngob, 1999). In contrast with the phosphorylated starch providing lower gelatinization temperature (Solarek, 1986). For the reaction of native rice starch with the combined of 1% STMP and 4% STPP provided the increase of the gelatinization temperature at the first period of reaction time (7.5-30 min). It could be the ocurring of crosslinking reaction, which provided higher gelatinization temperature. However at higher reaction time (60-120 min),it provided much lowering of the gelatinization temperature than the reaction of native rice starch with 1% STMP or 4% STPP much more than the others at final state. For the reaction of native rice starch with 1% STMP or 4% STPP provided higher gelatinization temperature on the first period of reaction time (7.5-30 min) which confirmed the occurring of crosslinking reaction in wet condition and on the last period of reaction time (ุ60-120 min) provided lower gelatinization temperature which confirmed the occurring of phosphorylation reaction.