The present invention relates to a sewing machine with direct drive type upper shaft, the sewing machine includes an oil sealing structure for preventing the lubricant fed to the mechanical friction part in the sewing machine arm from flowing to the inside/outside of a drive motor. The sewing machine of the invention includes an upper shaft for driving the sewing needle and a lower shaft for driving hook and a drive motor connected to any one of the upper shaft and lower shaft for driving the connected shaft, furthermore, includes a specific oil sealing structure for preventing the lubricant fed to the mechanical friction part from flowing to the inside/outside of the drive motor. According to above structure, because the oil sealing structure is adopted, the invention can prevent the lubricant flowing to the inside/outside of the drive motor mounted on one side of the sewing machine, thereby can protect the drive motor from being damaged; and can prevent the lubricant leaking outsideof the body of the sewing machine, thereby can prevent the sewn objects from being polluted.