With the rapid development of avionic system,the demands of ergonomic on cockpit display system are intensifying.As an important display device,touch screen has been used in cockpit display and control system.On the basis of ARINC661 specification,a display and control system with touch screen was developed.A method that can make partial areas of a picture move with a screen contact in real time was proposed and realized.This method used widgets defined in ARINC661 specification and realized its function through interactive instructions between UA and CDS.It makes the cockpit display control more convenient and efficient.