The invention relates to a quantitative analogical evaluation method for multiple parameters of a shale gas reservoir. The method comprises the following steps of acquiring the porosity, organic carbon content, methane content, total gas content, gas saturation, brittleness index, thickness and other shale gas reservoir evaluation key parameters of a target layer to be explained and key evaluation parameters of a reference layer with regional representation through logging data, drawing a multi-parameter analogical plate, and observing and comparing by using visual observation to intuitively qualitatively evaluate the gas bearing characteristic of the layer to be explained; according to a fact that an analogical evaluation value=a parameter value of the target layer/a parameter value of the reference layer, calculating the analogical evaluation value of each parameter, calculating a multi-parameter quantitative analogical evaluation index Ia, drawing a multi-parameter quantitative analogical relevance judgment plate, drawing multi-parameter analogical related strength R2, drawing an Ia-R2 evaluation crossplot, and putting the analogical evaluation index Ia-analogical related strength R2 data points of the to-be-explained target layer in the Ia-R2 evaluation crossplot; outputting a result.