To solve the problem that micro gas turbines (MGT) and energy storage devices are frequently adjusted because of power distribution in microgrid scheduling, a micro-grid coordinated scheduling method with flexible boundary control is proposed. First, the MGT flexibly changes its power output adjustment boundary according to the adjustment ability of the battery. Then, the battery adopts a variable current charging and discharging method to quickly capture randomly renewable energy and release stored energy to the maximum extent. Finally, the case simulation shows that the MGT reduces the number of adjustments, the battery is controlled more reasonably to charge and discharge, and the utilization rate of renewable energy is also improved. Therefore the proposed scheduling method can avoid MGT frequent adjustment, prolong the service life of the battery, cut down equipment loss and system operating costs, improve the scheduling flexibility of the microgrid, and reduce its dependence on the distribution network.