The invention relates to a printed circuit board outer shape manufacturing method, system and computer equipment. The method comprises the following steps of: acquiring a milling band file of an outershape file of each sub board of a working board after a cutter closing operation, wherein the sub board comprises a first sub board; according to the outer shape file of the first sub board, dividingthe milling band file into a first milling band file corresponding to the first sub board and a second milling band file corresponding to other sub boards; manufacturing the outer shape of the firstsub board according to the first milling band file; and when it is determined that the outer shape of the first sub board is qualified, manufacturing outer shapes of other sub boards according to thesecond milling band file. The outer shapes of the first board and other sub boards are manufactured separately; and after the manufacturing error of the first board is eliminated, the outer shape manufacturing of the whole working board is performed, so that the working board outer shape manufacturing efficiency is improved as a whole.