The generalized fifth-order Korteweg-de Vries (KdV) equation, encompasses certain characteristics of the original KdV equation and is capable of describing more complex wave phenomena. The Miles resonance conditions are achieved for Y-shaped solitons by rendering the phase shift induced by the elastic interaction among N-solitons. Our investigation not only conducts a thorough analysis of the low-order resonant solutions but also presents general resonant conditions that enable the degeneration of N-solitons solutions into resonant solutions.