The invention relates to the field of optical phase-locked loops and provides a 10MHz-10GHz optical phase-locked loop device. The device includes a titanium-doped sapphire laser (1), a semiconductor laser (2), a high-bandwidth photoelectric detector (3), a radio frequency power beam splitter (4), a spectrum analyzer (5), a high-frequency signal generator (6), a frequency mixer (7), a radio frequency power amplifier (8), a signal generator (9), an optical phase-locked loop module (10), and an oscilloscope (11). The device can make the frequency difference between the two lasers fixed in the range of 10MHz to10GHz, and the device can stably and continually work and is less affected by the external environment.