Smoldering is a low-energy disposal technology for high-water organic solid waste, and self-sustaining smoldering experimentsare carried out for leftover rice to provide technical parameter support for the industrial application of food waste smoldering disposal andthe development of related tail gas purification devices. The effects of parameters such as abrasive ratio, ignition temperature and Darcyflow rate on the weight loss effect of leftover rice and the concentration of components of smoldering flue gas were experimentally studied.The results show that the oxidation reaction can only occur when the pyrolysis coke of starch based kitchens is above 500 ℃ . In order toensure that starchy kitchens can achieve self-sustaining smoldering disposal under low energy consumption conditions, it is necessary toensure that the low calorific value of the smoldering system is greater than 0.72 MJ/ kg. For mixed materials with a low calorific value of thesystem slightly below this value, self-sustaining smoldering can be achieved through combustion support measures such as increasing theignition temperature and the Darcy flow rate. Due to the high volatile content characteristics of rice, the volatiles of the bottom material inthe smoldering system will partially condense in the area of the low-temperature sand cover layer, so the sand cover layer that originallydoes not contain combustible organic matter will be violatively oxidized and exothermic at the end of smoldering disposal. Too high or toolow abrasive ratio will be detrimental to the smoldering disposal of leftover rice. The soldering disposal effect of rice will be enhanced byincreasing the ignition temperature and Darcy flow rate. For wet rice with a moisture content of 60%, the disposal effect is best when theDarcy flow rate is 4 cm/ s and the ignition temperature is 350 ℃ , the mass ratio of rice to quartz sand is 4. During the entire process ofsmoldering reaction, the concentrations of CO2, CO and VOCs in flue gas show a trend of first increasing, then stabilizing, and then decreasing. The CO2 concentration in the self-sustaining propagation section fluctuates between 6.75%-9.41%, CO changes in the range of1.37%-2.51%, and VOCs changes between 109×10-6 -251×10-6 by adjusting the experimental parameters of smoldering. The higherthe moisture content of wet rice is,the higher the minimum Darcy flow rate required to achieve self-sustaining smoldering is. The Darcyflow rate is increased to 8 cm/ s, which can achieve up to 75% moisture content starch kitchen disposal.