A marine hose status monitoring system that determines a status of a marine hose comprising a hose body provided with an inner surface layer, a reinforcing layer disposed on an outer circumferential side of the inner surface layer, and an outer surface layer disposed on an outer circumferential side of the reinforcing layer, and a connection fitting connected to both end portions of the hose body in a longitudinal direction, the marine hose status monitoring system comprising: a marine hose comprising a hose body provided with an inner surface layer, a reinforcing layer disposed on an outer circumferential side of the inner surface layer, and an outer surface layer disposed on an outer circumferential side of the reinforcing layer, and a connection fitting connected to both end portions of the hose body in a longitudinal direction; wherein the inner surface layer has a two-layer structure of a first inner surface layer that comes into direct contact with the conveyed fluid and a second inner surface layer adjacent to an outer circumferential side of the first inner surface layer; a leakage detection member embedded to extend inside the inner surface layer so as to extend between the first inner surface layer and the second inner surface layer; a leakage detector connected to the leakage detection member; the leakage detector determining that damage has occurred to the inner surface layer when a fluid flowing through a fluid flow path of the hose body comes into contact with the leakage detection member; and a fluid penetration member that is located adjacent to the leakage detection member, is embedded in the inner surface layer, and allows penetration of the fluid; the fluid penetration member being disposed in a range that is at least 100 mm frontward and rearward in the longitudinal direction of the hose body with respect to an insertion side end of the connection fitting. a marine hose comprising a hose body provided with an inner surface layer, a reinforcing layer disposed on an outer circumferential side of the inner surface layer, and an outer surface layer disposed on an outer circumferential side of the reinforcing layer, and a connection fitting connected to both end portions of the hose body in a longitudinal direction; wherein the inner surface layer has a two-layer structure of a first inner surface layer that comes into direct contact with the conveyed fluid and a second inner surface layer adjacent to an outer circumferential side of the first inner surface layer; a leakage detection member embedded to extend inside the inner surface layer so as to extend between the first inner surface layer and the second inner surface layer; a leakage detector connected to the leakage detection member; the leakage detector determining that damage has occurred to the inner surface layer when a fluid flowing through a fluid flow path of the hose body comes into contact with the leakage detection member; and a fluid penetration member that is located adjacent to the leakage detection member, is embedded in the inner surface layer, and allows penetration of the fluid; the fluid penetration member being disposed in a range that is at least 100 mm frontward and rearward in the longitudinal direction of the hose body with respect to an insertion side end of the connection fitting.