One year. Official website introduced that the professional training time of non-public security colleges newly hired by the people's government of Dayu County is determined by the political work department, police types and departments according to the actual situation, so as to ensure that the people's police participate in professional training at least once a year, with a total of not less than 30 days in three years. The police training time is not less than 90 days. The training time for newly recruited graduates from non-public security colleges, newly recruited and transferred personnel below the county level is 180 days, and the practical teaching time is not less than 30% of the total training time.