The utility model discloses a dual -redundancy atmosphere data acquisition system belongs to atmosphere data acquisition system flight test technical field. Include: flight control terminal, the power of heating, the control box of heating, pressure sensor, the flight control terminal sets up two sets of control signal of heating, and two sets of powers of heating are introduced from different busbars respectively to the power of heating, and the control box of heating is provided with the relay of two sets of complete independences, and pressure sensor inside is provided with two sets of heaters, two sets of heating signal and two sets of power of heating are introduced respectively to the two sets of relay one end of control box of heating, and two sets of heaters are controlled respectively to the other end. Every pressure sensor embeds two sets of heaters, two sets of heater simultaneous workings under the operating condition, and the normal ice function of preventing and kill off can both be guaranteed to any a set of heater alone normal during operation to realize atmosphere data acquisition system's dual -redundancy heating. Thereby atmosphere data system measuring accuracy nature has been improved, the utility model discloses the commonality is strong, easily promotes.