Force generation and interaction can improve the immersive and authenticity of the virtual environment, which is an important research direction in the field of human-computer interaction. For the limitation of single-touch force interaction, this study proposes a real-time force generation method based on double-touch interaction. First of all, the double touch interaction is divided into four states. Then, the real-time force generation method of double-touch interaction in different states is proposed. Finally, an experimental environment of double-contact interaction is established to test the prosposed method. The evaluation research of force sense generation shows that the method can generate the double-touch force sense in real time, enhance the immersive sense and authenticity of the virtual environment, and improve the naturalness of human hand haptic interaction.