The invention discloses a sewing machine. The machine includes a driving arm, a rotational driving source used for driving the driving arm to rotate and switch to touch a presser lifting actuator or a discharging feeding actuator, and a linear driving source used for driving the rotational driving source to do directional rectilinear motion. Due to the switch function of the rotational driving source, the sewing machine only needs to arrange a linear driving source to optically drive the presser lifting actuator and the discharging feeding actuator, thereby facilitating simplification of the mechanisms inside the sewing machine, decreasing the quantity of components required to be arranged in the sewing machine, reducing assembling difficulty of the sewing machine, lowering production and maintenance costs of the sewing machine and expanding available space inside the baseplate of the sewing machine, and meanwhile, the cooperative arrangement of linear motion and rotational motion is in favor of reasonable distribution of interior space of the sewing machine shell and route planning of the driving arm.