The invention discloses a machine table of a sweater sewing device. The machine table of the sweater sewing device comprises a longitudinal workbench surface and door-frame-shape supports supported atthe lower portion of the workbench surface; the door-frame-shape supports are perpendicular to the length direction of the longitudinal workbench surface, longitudinal dual-groove rails are arrangedon the outer sides of the lower ends of the two sides of the door-frame-shape supports, and are parallel to the longitudinal workbench surface, sliding doors are installed on the dual-groove rails ina sliding mode, closed surrounding plates are arranged on the outer sides of the door-frame-shape supports at the two ends in the length direction of the workbench surface, the height of the closed surrounding plates is coincident with the height of the sidling doors, a beam is arranged at the upper ends of the sliding doors and the closed surrounding plates, viewing windows are arranged between the beam and the edge of the longitudinal workbench surface, and space defined by the closed surrounding plates and the sliding doors is installing space between a driving device and a transmission device. According to the machine table of the sweater sewing device, the structure is simple, installation is convenient, a motor and transmission are internally arranged, and the machine table is attractive.