Direct-drive automatic overlock machine with build-in servo motor and intellectualized functions, including automatic starting, automatic sewing, automatic stopping, automatic trimming, automatic thread-thrum sucking,auto foot lifter. Could be set as automatic. semi automatic or manual operation mode to satisfy different customers'r equirement. With automatic cloth edge sensor and automatic detection functions,which could efficiently control the wasting resources when sewing without cloth and racing the motor, reduce production cost, improve the working efficiency. The machine can save energy and reduce consumption 60%-70%. It is convenient and easy to operate with simple operation panel, you can adjust according to different functions requirement.