A computer-implemented method for predicting oil and gas yields in in-situ oil shale exploitation, comprising: acquiring an original total organic carbon value, a vitrinite reflectance (Ro) value and an original hydrogen index value of a shale to be measured; obtaining an oil yield of the shale to be measured based on the original TOC value, the Ro value, the original HI value of the shale to be measured and a pre-established model for predicting oil yield in in-situ oil shale exploitation, wherein the model for predicting oil yield in in-situ oil shale exploitation is pre-established based on oil yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples and the original TOC value, the Ro value and the original HI value of the shale samples; and obtaining a gas yield of the shale to be measured based on the original TOC value, the Ro value, the original HI value of the shale to be measured and a pre-established model for predicting gas yield in in-situ oil shale exploitation, wherein the model for predicting gas yield in in-situ oil shale exploitation is pre-established based on gas yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples and the original TOC value, the Ro value and the original HI value of the shale samples; wherein acquiring the original total organic carbon value, the vitrinite reflectance (Ro) value and the original hydrogen index value of the shale to be measured comprises: obtaining the original TOC value of the shale to be measured based on a TOC value and a Ro value obtained by measuring the shale to be measured and a pre-established model for predicting original TOC, wherein the model for predicting original TOC is pre-established based on a TOC change rate obtained by performing a thermal simulation experiment on a plurality of different shale samples; and obtaining the original HI value of the shale to be measured based on a HI value and a Ro value obtained by measuring the shale to be measured and a pre-established model for predicting original HI, wherein the model for predicting original HI is pre-established based on a HI change rate obtained by performing a thermal simulation experiment on a plurality of different shale samples; wherein the model for predicting original HI is: HI o = HI a 2 × e b 2 × Ro; wherein HI o denotes the original HI value of the shale to be measured; HI denotes the HI value obtained by measuring the shale to be measured; Ro denotes the Ro value obtained by measuring the shale to be measured, and a 2 and b 2 denote empirical coefficients. acquiring an original total organic carbon value, a vitrinite reflectance (Ro) value and an original hydrogen index value of a shale to be measured; obtaining an oil yield of the shale to be measured based on the original TOC value, the Ro value, the original HI value of the shale to be measured and a pre-established model for predicting oil yield in in-situ oil shale exploitation, wherein the model for predicting oil yield in in-situ oil shale exploitation is pre-established based on oil yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples and the original TOC value, the Ro value and the original HI value of the shale samples; and obtaining a gas yield of the shale to be measured based on the original TOC value, the Ro value, the original HI value of the shale to be measured and a pre-established model for predicting gas yield in in-situ oil shale exploitation, wherein the model for predicting gas yield in in-situ oil shale exploitation is pre-established based on gas yield data obtained by performing a thermal simulation experiment on a plurality of different shale samples and the original TOC value, the Ro value and the original HI value of the shale samples; wherein acquiring the original total organic carbon value, the vitrinite reflectance (Ro) value and the original hydrogen index value of the shale to be measured comprises: obtaining the original TOC value of the shale to be measured based on a TOC value and a Ro value obtained by measuring the shale to be measured and a pre-established model for predicting original TOC, wherein the model for predicting original TOC is pre-established based on a TOC change rate obtained by performing a thermal simulation experiment on a plurality of different shale samples; and obtaining the original HI value of the shale to be measured based on a HI value and a Ro value obtained by measuring the shale to be measured and a pre-established model for predicting original HI, wherein the model for predicting original HI is pre-established based on a HI change rate obtained by performing a thermal simulation experiment on a plurality of different shale samples; wherein the model for predicting original HI is: HI o = HI a 2 × e b 2 × Ro; wherein HI o denotes the original HI value of the shale to be measured; HI denotes the HI value obtained by measuring the shale to be measured; Ro denotes the Ro value obtained by measuring the shale to be measured, and a 2 and b 2 denote empirical coefficients.