Deep space exploration spacecraft

The invention provides a deep space exploration spacecraft. The spacecraft is divided into three parts, namely an instrument cabin, a load cabin and a supporting cabin. The supporting cabin is used for bearing the landing detector and separating the landing detector when reaching a preset orbit, so that the landing detector lands to an outer planet for landing detection; the load cabins are independently designed and arranged in the supporting cabin and the instrument cabin, large-size detection loads are installed on the load cabins, space coupling of the large loads and the main platform is reduced, and the adaptability of the spacecraft to the geometrical shape and weight of the large loads is improved. The instrument cabin is a main body of the spacecraft, in a limited space, besides GNC, propulsion, integrated electronics, measurement and control systems and the like of a conventional spacecraft, various scientific detection effective loads are further arranged to carry out long-term scientific detection