The invention relates to a portable manual curved-surface screen printing machine, and belongs to the technical field of printing. The portable manual curved-surface screen printing machine mainly comprises a machine frame, a top frame, a rectangular frame, a screen printing plate and a scraping plate, wherein the top frame is located at the top of the machine frame and is in a U shape, and the two end points of a U-shaped opening are connected to a rotary shaft at the top end of the machine frame so that the U-shaped top frame can rotate around the rotary shaft; sliding guide rails are symmetrically mounted on the two sides of the U-shaped top frame, the rectangular frame is mounted in the sliding guide rails, and the rectangular frame can slide in the U-shaped top frame freely; the screen printing plate is fixed in the rectangular frame through fasteners; the two sides of a cross beam on the lower portion of the machine frame are each symmetrically provided with two bearings used for storing an article to be printed, and the article to be printed can rotate freely under the effect of friction force of the screen printing plate; and a positioning pointer is mounted on one supporting rod of the machine frame and points to the feature point of the article to be printed, and thus the initial printing position of the article to be printed is marked. The portable manual curved-surface screen printing machine is simple in structure, operation is flexible and convenient, the printing quality is good, the article to be printed can be printed and repaired on the using field, and batched printing can also be performed.