The invention relates to the technical field of moulds, in particular to an extrusion mould with a rotary type external water-cooling regulating mechanism. The extrusion mould comprises a mould body. According to the extrusion mould with the rotary type external water-cooling regulating mechanism, auxiliary heat conducting blocks with regulating rotary blocks are fixedly connected at vertex-angle positions at the outer side of a first supporting plate, the outer side of a first confluence plate and the outer side of a bottom molding plate; connecting shafts on the auxiliary heat conducting blocks are used for supplying water into the auxiliary heat conducting blocks, the regulating rotary blocks, external connecting tubes and external water tube connecting heads; by virtue of transverse water conveying tubes, the auxiliary heat conducting blocks at different positions are in communication, so that heat dissipation is greatly improved and temperature range is greatly expanded; and moreover, temperature detecting devices are directly arranged inside monitoring slots, so that the inner temperature is easier to grasp, and safety and durability are greatly improved.