Operation with fire at high site is a common operation in grain storage enterprises. In recent years, due to non-standard operating procedures, high altitude falling, electric shock, fire and other production safety accidents occur frequently. Among them, the main hazards are operation without scheme, examination and approval documents, bare wire, low-voltage power grid, high-voltage power grid touchable at operation site and combustible and explosive materials within the range of spark without being cleaned. In order to raise the operators’ awareness of the risks on operation with fire at high site, effectively improve the safety awareness of operators, identify the hazards and determine the risk level, some measures were carried out, including to clean site, wear protective articles, use safe instruments, equip with firefighting equipment, eliminate the unsafe behavior of people, unsafe state of object, bad environment, management defect. The purpose is achieving the prevention and control of hazard sources in operation with fire at high site, ensuring the safety of the operators,preventing or reducing the similar production safety accidents.