Creating a safe environment is one of the most main indicators in any project. This research has been carried out with the aim of identifying the risks related to flyrock in blasting operations in the road construction project in hard rock. Flyrock is one of the destructive consequences of blasting operations, which occurs in the form of uncontrolled and unintentional flyrock fragments out of the blast area with high energy and speed. These stone pieces Sometimes their hit of people and Equipment can lead to irreparable injuries. 54 flyrock events were identified and prioritized with the help of experts and review of scientific records and observation and inspection. A fault tree was created for the risk of flyrock that was analyzed as a top event. The opinions of 10 experts on the probability rate of flyrock were completed using the method of linguistic variables. Experts were awarded points using the significance coefficient table of each expert. Using mathematical relations, the consensus of experts was calculated fuzzily. The resulting numbers were fuzzy using the relationships. The probability rate of the flyrock event was calculated under uncertainty 0.4907.