Aiming at the application of the model with disasters and Bernoulli mechanism in real life a single workbench queue with disasters delayed maintenance feedback and vacation under Bernoulli mechanism is proposed. The disaster affects the system only when the workbench is running and the system needs to be repaired and all the customers on the site leave the system forever. After completing a service the staff can choose to take a vacation or continue to serve the customer who accepts this service will leave the system or go back to the head of the queue to wait for the next service. By using the Markov Chain method the steady-state system is analyzed and the equilibrium equation is obtained. The PGF of the number of customers in the system under steady-state are derived by solving the balance equations. The probability of the waiter being on vacation busy period delay period maintenance period and idle period are obtained respectively. The distribution of stay time in steady-state is obtained according to the strong Markov property. Finally numerical simulation is used to explain the influence of some parameters on the average number of customers in the system and the correctness of the model and method is verified.