The invention discloses a coal as fired sampling system and a utilization method thereof. The system comprises a supporting rod, a laser reflection board is arranged at the top of the supporting rod, and a laser range finder is movably arranged on the middle or lower portion of the supporting rod and attached to the supporting rod through a fixing strap. The coal as fired sampling system and the utilization method thereof have advantages that automatic acquisition of coal as fired samples can be realized, labor intensity is effectively relieved for coal sampling personnel, safety of the sampling personnel is protected, coal leakage can be effectively prevented, and cleanness of a sampling surrounding environment is protected. By an intelligent control system, intelligent real-time continuous collection of the coal as fired is realized, intelligent sampling of the coal as fired can be realized according to boiler operating states and mixed coal types, problems of poor representativeness and high occasionality and randomness of a traditional coal as fired sampling method are effectively solved, and representativeness and accuracy in coal dressing are improved.