Abstract: Optical sensing technology is widely recognized for its high detection sensitivity, fast response speed, and strong immunity to electromagnetic interference, and is therefore considered to hold broad application prospects in the field of weak signal detection. However, as technical demands have been continuously increasing, conventional optical sensing methods have been found to be insufficient for high-precision detection of weak signals in various application fields. Although detection sensitivity can be improved to some extent by increasing the laser power, significant noise is introduced by high-power lasers, which leads to a sharp degradation of the signal-to-noise ratio. In contrast, quantum sensing based on squeezed light is regarded as a promising approach to achieve detection sensitivity beyond the quantum noise limit, even under low laser power conditions.To address the above issues, an experimental setup for generating bright amplitude-squeezed light was constructed in this work. The setup was mainly composed of three parts: the laser generation section (including a 1064 nm single-frequency laser and a frequency doubler), the squeezed light generation and detection section (including an optical parametric amplifier and a balanced homodyne detector), and the feedback control section (comprising seven sideband locking loops). Through optimization of the mechanical structure, optical layout, and feedback control strategy, a stable squeezed light output with an average squeezing level of (−6.4 ± 0.2) dB and an average optical power of 35 μW was achieved.