The utility model relates to a job site drawing placer specifically is a portable flexible drawing support, has solved current drawing and has put to exist to waste time and energy through manual operation and influence the problem of efficiency of construction. Portable flexible drawing support, including the cyclic annular frame heart of ellipse, the frame is provided with five cylinder hinges in the heart, and wherein the cylinder of two symmetries cuts with scissors and all is connected with the expansion bracket arm, all is connected with the expansion bracket leg in the cylinder hinge of three equipartition setting in addition, and the outer end of two expansion bracket arms all is provided with the picture paper clip. The utility model has the advantages of reasonable design reliably, having saved manual operation and having caused the great problem of intensity of labour, even if supporting stable windy, does not influence normal use yet moreover, and convenient the expansion is drawn in in simultaneously, and portable has simple structure, processing convenience and advantage with low costs.