Aiming at problem of difficult packaging of sensitive elements of the miniature force-sensitive joystick and feel stiff in operation structure optimization design is carried out. A flexible beam structure is designed to replace the traditional rigid beam structure

which consists of elastic and flexible components. The elastic component adopts a hollow square section

which increases packaging space of sensitive elements to reduce the difficulty of packaging. The flexible component adopts spiral structure

which can produce toggle stroke that is easy for the operator to perceive and improve the operational feel. It provides an effective calculation method and provides basis for the specific parameters design of flexible beams.