Abstract: The development of standard model for a civil single-aisle passenger aircraft is significant for the advancement of CFD simulation and wind tunnel test. Not only can it be used to validate the credibility of CFD simulation, promote the progress of CFD technology, provide a reliable tool for aerodynamic shape design, and also can it be used to validate the quality of wind tunnel test, correct measuring instruments, develop advanced measuring method, and improve calibration method for the interference from wind tunnel wall/support. The aerodynamic shape design of a standard model CHN-T1 is presented for wind tunnel test and applied CFD credibility validation, which is composed of wing, body, horizontal-tail, vertical-tail, nacelle, pylon and so forth. The wing is optimized in detail, together with a single-aisle fuselage, horizontal and vertical tails meeting the typical stability and control requirements, a flow-through nacelle installed under the wing with a pylon. Those components constitute the clean configuration, whose geometric feature is representative of a contemporary single-aisle passenger aircraft. The model is designed to fly at a cruise Mach number of Ma=0.78 with a nominal lift coefficient of C_L=0.5. Supercritical airfoils are employed to develop the wing, thus good aerodynamic characteristics is achieved with and without the nacelle/pylon group. Relevant information can provide reference support for the 1st Aeronautics CFD Credibility Workship(AeCW-1).