Abstract: A resin hose for fuel in a plural-layer structure comprising a main body layer (14) made of aliphatic polyamide, and an inner tube layer (16) made of fluoroplastic disposed on the inner side of the main body layer (14). One or both of the aliphatic polyamide (aliphatic PA) and the fluoroplastic are respectively a modified aliphatic PA and a modified fluoroplastic. The characteristics of the both satisfy the requirements of a difference of melting point (DSC method) of 60° C. or less, and a difference of modulus of flexural elasticity (ASTM D 790) of 1500 MPa or less. Accordingly, the main body layer (14) and the inner tube layer (16) can be directly adhered to each other by co-extrusion.