A new osculating curved cone (OCC)method for streamlining tracing axisymmetric flow fields of isentropic compressing waves was used to design the waverider lower surface and inlet lip inner surface.The waverider surface was spanwisely truncated according to the constraint of the vehicle's and engine's width.The numerical and experimental analyses show that OCC waverider inlet has some advantages compared with the same compression ratio four-stage ramp inlet. At Mach number is 4.5

the new inlet's capture mass flow rate increases by 12% and total pressure recovery coefficient increases by 39%.At Mach number is 6

the new inlet's capture mass flow rate increases by 4% and total pressure recovery coefficient increase by 50%.The supersonic combustion ramjet engine's performance is efficiently increased too.