Aiming at the practical requirements of the multi domain combat idea and the army's modernization transformation for rapid mobile deployment, according to the bionic design concept and the Blended wing body design idea, a minke whale Blended wing body fixed wing UAV design was designed. The article introduces the basic ideas of the fuselage and wing simulation design in this design scheme, and provides the overall design scheme. The simulation calculation results prove that the design scheme has excellent lift and drag characteristics, and can effectively supplement lift at high angles of attack, making the UAV stall gentle and with a large angle of attack, meeting the needs of long-term and multi scenario applications.