The invention discloses a preparation method of a steel cord enhanced graphite silicon carbide crucible. The preparation method comprises the following steps: 1, selecting steel cords, then covering the steel cords with an alloy coating by a chemical plating method, and finally knitting the steel cords covered with the alloy coating to form a grid-shaped cage structure; 2, mixing graphite powder with silicon carbide particles according to a certain ratio to prepare a graphite silicon carbide mixture; 3, placing the prepared cage formed by knitting the steel cords into a deformable rubber mould and then filling the rubber mould with the graphite silicon carbide mixture prepared in the step 2; adjusting the position of the cage formed by knitting the steel cords; 4, placing the rubber mould into isostatic equipment, and pressing the graphite silicon carbide mixture and the cage formed by knitting the steel cords together by adopting an isostatic pressing method to form a crucible blank; and 5, sintering the prepared crucible blank at a high temperature.