The utility model belongs to the field of aviation machinery, and particularly relates to a one-blank multiple-form main joint mould forging which is of an integral structure and comprises a head part, a triangular frame part and a tail part. The one-blank multiple-form main joint mould forging comprises a triangular frame rib for improving the structure strength, a tail part rib, a main adapter reinforcing rib, a first integral web, a second integral web, a third integral web and a fourth integral web, wherein the first integral web, the second integral web, the third integral web and the fourth integral web are arranged on the ribs, and the triangular frame part also comprises a first reinforcing inclined rib and a second reinforcing inclined rib which are used for reinforcing the second integral web and additionally arranged between the triangular frame rib and the tail part rib. According to the one-blank multiple-form main joint mould forging, the integral structure of a main adapter of an airplane under the common condition is not changed largely, local size, shape and position are changed a little, and changes of the reinforcing ribs and the like are locally enhanced, and one-blank and multi-form general manufacture can be carried out through reasonably distributing organic blanks and moulds.