The invention discloses a rockburst real-time forecasting technique device used in the process of rock tunnel construction, wherein the rockburst real-time forecasting technique device is applied to the field of rock tunneling. The rockburst real-time forecasting technique device comprises a sound wave receiving sensor, a signal amplifier, a data acquiring device, a data server, an industrial computer, a data connecting line, tunnel surrounding rock, a tunnel construction device, a judging model inputting signal, a nerve unit, threshold value and an early warning data outputting device. The sound wave receiving sensor is connected to the signal amplifier through the data connecting line, the signal amplifier is connected with the data acquiring device which is connected with the data server, a judging model which is composed of the nerve unit and the threshold value is placed inside the data server, the signal acquired by the sound wave receiving sensor serves as the judging model inputting signal to be input into the nerve unit, and the nerve unit is connected with the threshold value. According to the rockburst real-time forecasting technique device, sound wave data are compared with a neural network-based rockburst forecasting model built by the backstage of the computer and are analyzed, and the purpose that the possibility of tunnel surround rock rockburst is forecasted in real time can be achieved through the acquired result.