The scheduling problem of flexible job in shop is solved with genetic algorithm, job queue is allocated to specified machines according to working procedure. Suppose N pieces of machined workpiece, J sequences of workpiece I are completed in M machines, mathematical model is established. Scheduling route is denoted by genic code host string, scheduling sequence is denoted by assistant string. Aceoss operator was adhibited in host string, and variation operators were brought by host string and assistant stri...