After diving decompression, bubbles will generate in diver's body even the decompression schedule is not violated, and they may increase the risk for venous gas embolism (VGE). Due to the small number of bubbles or the absence of obvious symptoms and signs of decompression sickness, most divers could not feel the presence of VGE. However, the amount, location, and duration of bubbles in the body after decompression are closely related to the risk of decompression sickness after diving. Therefore, increasingly more studies have evaluated the degree of decompression stress and the risk of decompression sickness by detecting the related parameters of bubbles in the body after decompression. Herein, we briefly reviewed the application of ultrasonic bubble detection in diving decompression researches.