The invention provides an organosilicone heat-resistant coating with an electromagnetic shielding effect and a production method thereof, and belongs to the field of electromagnetic shielding paint. According to the specific scheme, the organosilicone heat-resistant coating with the electromagnetic shielding effect comprises an organosilicon polymer matrix, electromagnetic shielding filler and a curing agent, wherein the organosilicon polymer matrix is phenyl-glycidyl ether-functionalized polysiloxane and amino-functionalized polysiloxane, and the electromagnetic shielding filler is surface-functionalized MXene(Ti3C2Tx) nanosheets. The phenyl-glycidyl ether-functionalized polysiloxane and the amino-functionalized polysiloxane as matrix materials have the characters that the structure is controllable, and the heat-resistant performance is excellent, and the technical problems that in the prior art, an electromagnetic shielding coating polymer matrix is poor in heat resistance, uncontrollable in structure and complex in synthesis process are solved.