The invention discloses a cable extrusion test run technology. The technology comprises the steps that (1) a mold core and a mold sleeve are selected according to the cable extrusion thickness, a wedge-shaped ruler is inserted into the gap between the mold core and the mold sleeve for measurement after the mold core and the mold sleeve are installed, and meanwhile the coaxiality of the mold core and the mold sleeve are precisely adjusted; (2) technology traction and extension are achieved for the cable extrusion technology, concretely, optimal technological parameters are set for the cable type, cable materials and indoor temperature, in other words, glue output amount, the traction speed and indoor temperature are set as fixed values, the plastifying temperature which is a variable is adjusted, five kinds of finished products plastified at different temperatures are manufactured in a trial mode, insulation voltage, tensile strength, elongation at break and hot extending tests are carried out, test results are compared, the plastifying temperature value with the best electric performance and mechanical performance is taken as the optical parameter value for the processing technology of the cable type, and the standard technological process is formed. According to the cable extrusion test run technology, a mold is precisely adjusted before cable extrusion, the structural precision is ensured, using is easy and convenient, the maneuverability is high, and the rate of rejected products produced in the cable manufacturing process can be effectively lowered.