This paper based sound signal data recorded in the Antarctic, reports preliminary results of study on the sound signal characteristics of various acoustical behaviours of the penguin Pygoscelis Adeliae. A Pygoscelis Adeliae emits different acoustical signals consisting of a series of pulses and continuous wave. Among these, the signal “ea” of a male penguin and "a" of a juvenile penguin are all composed of pulses, the signals "ji" of an infant penguin; "a" of a juvenile penguin and “ga" of an adult penguin all consist of a series of pulses, and the signal "a" of an adult penguin taking care of some juvenile penguins is composed of continuous waves.