The utility model relates to an anti-separation groove cable drum. The anti-separation groove cable drum comprises drum outer discs, a drum inner disc and cable grooves; the drum outer discs are fixed to the two sides of the drum inner disc, and the cable grooves are formed between the drum outer discs and the drum inner disc. A cable guide side wing is fixed to one circumference of each drum outer disc, each cable guide side wing and the corresponding drum outer disc are welded in an inclined mode, and each cable guide side wing is divided into an upper part and a lower part which are bent in a small-angle mode. Compared with the prior art, the novel anti-separation groove cable drum has the advantages that under the conditions that the original design is not changed, and not too muck manufacturing cost is increased, the effect of increasing the cable groove width can be achieved, and misalignment between a cable and a cable groove can be corrected to a large degree; even though under the condition that the cable is not aligned with the cable groove, the cable can still be reeled into the cable groove, and cable groove separation accidents are avoided. The service life of the cable drum is effectively prolonged.