Because it is difficult and somewhat dangerous to build a laboratory for simulating Venus environment, we firstly simulate the atmospheric environment of Venus by using computers. Then we simulate the whole process of a balloon moving from all platforms to a final stable height in the above environment. By comparing the simulation results of the balloon under different parameters, we can assist the design of the balloon for Venus detection better. Finally, we put forward a new idea of establishing the Earth and Venus equivalent horizontal distance relationship, so as to simulate the infrared transmittance characteristics in the Venus environment, provide reference information for the design of Venus infrared payload systems and also provide a new direction for the follow-up study of Venus balloons and their infrared payload systems.