The invention discloses an intelligent heterogeneous sensor array of an aircraft sheath, and belongs to the sensor field. The sensor array comprises a secondary array sensor group and a primary arraysensor group, the secondary array sensor group replaces any main sensor unit in an M*N sensor group to form the heterogeneous sensor array, and the secondary array sensor group is composed of secondary sensor units in M' rows and N' columns; the M*N sensor group is composed main sensor units in M rows and N columns; and the primary sensor group is formed by residual sensor units, except the main sensor unit replaced by the secondary array sensor group, of the M*N sensor group. The sensor array layout is optimized, a small number of sensors is used to obtain effective data information almost equivalent to the larger scale of homogeneous sensor array, arrangement of useless measurement points is avoided, function expansion in a larger area is easy to realize, and the sensor array can be integrated into the aircraft sheath.