The invention discloses a high-voltage cable head lineation cutting positioning device which is accurate in manufacturing. The high-voltage cable head lineation cutting positioning device is characterized by comprising a main ruler, wherein a main ruler clamping jaw is arranged at the left end of the main ruler, a positioning block is fixedly installed on the rear side of the main ruler clamping jaw, the right end face of the positioning block is flush with the right end face of the main ruler clamping jaw, and zero graduation standard positioning of the high-voltage cable head lineation cutting positioner is achieved due to the fact that the right end face of the positioning block is aligned to the left end face of a high-voltage cable head which needs to be measured; and auxiliary rulers which can slide and conduct positioning on the main ruler are installed on the main ruler, a plurality of lineation cutting positioning auxiliary devices which can slide and conduct positioning on the main ruler are arranged on the main ruler and arranged between the main ruler clamping jaw and the auxiliary rulers. The high-voltage cable head lineation cutting positioning device is reasonable in structure and achieves lineation positioning at one time, the precision reaches up to 0.02mm, and cable sheathes, steel belt steel armors, copper shielding layers, semiconductive layers, main cable insulating layers and the like are peeled off layer by layer according to lineation positions.