The YG 007-01 high-speed overlock sewing machine series creates 605 basic stitches by interweaving the left and right movements of three straight needles and the overlock needles through bending. The lubrication of this machine adopts a composite rotor pump to achieve strong injection lubrication and forced oil suction device. The machine can form various stitches such as 406, 407, 602, 605, 401, 408, etc. At high speed, it can perform HR cooling on the upper and lower needle threads, and high-temperature non melting stitches. The use of needle bar thread picking and thread picking axis thread picking linkage is completed, and the bottom line uses a mobile threading cam thread picking; It is convenient to thread and prevents the trouble caused by the entanglement of the bottom line. Stable and reliable multi needle composite stitching, with added movable needle protection mechanism to adapt to different fabric changes. This machine can form a series of sewing machine models through a series of needle position components and accessories, forming stitches such as two-line, three line, four line, five line, and mesh. In addition to its sewing function, it is mainly used for decorative sewing, especially for casual sportswear, which has a wider range of applications.