The present invention discloses an anti-crack low-voltage power cable. The cable comprises a heat-shrinkable T bush, an outer insulation layer, an outer shielding layer, cable core bodies and a support mechanism, the support mechanism comprises an elastic support and support posts, the four support posts are uniformly installed at the outer surface of the elastic support, installation grooves areformed between each two support posts, the installation grooves are internally provided with the cable core bodies, the outer side of the support mechanism is coated with an armor layer, the outer shielding layer is arranged around the outer side of the armor layer, the outer surface of the outer shielding layer is coated with the outer insulation layer, and the outer side of the outer insulationlayer is coated with the heat-shrinkable T bush. Through arrangement of the outer sheath, the heat-shrinkable T bush and the anti-oxidation coating, the problem is solved that the insulation layer isvulnerable to oxidation and the ultraviolet ray is corroded to cause crack of the insulation layer when the cable is used in the prior art.