Novel stay cable HDPE waterproof jacket

The invention discloses a novel stay cable HDPE waterproof jacket. The novel stay cable HDPE waterproof jacket comprises an outer layer and an inner layer, wherein the outer layer comprises a waterproof component, the waterproof component comprises a body and a hot melting section, and the body comprises a cover and a transition section connecting the cover with the hot melting section; the inner layer comprises a stay cable jacket layer, the hot melting section is arranged on the stay cable jacket layer, and the hot melting section and the stay cable jacket layer are integrated in a hot melting mode. The novel stay cable HDPE waterproof jacket has the advantages that the waterproof cover is tightly combined with the stay cable jacket layer in a sealed mode, so that water can not enter an embedded pipe when a stay cable is subjected to long-term vibration, and the problem of water inflow caused by vibration of the stay cable can be completely solved.