The invention discloses a forest hydrological regulation monitoring device. The device comprises a base, ground gripping mechanisms, a monitoring box, a detector body, a rotation adjustment mechanism,an electric expansion link, a solar power generation device, a monitoring mechanism, an environment sensor, a laser liquidometer, a laser transmitter-receiver and a turbidimeter. According to the device, through the arrangement of the rotation adjustment mechanism, a motor drives a rotary shaft to rotate, a transmission shaft is driven to rotate in a meshing mode, and therefore the position of the solar power generation device is adjusted to guarantee that the solar power generation device faces the sun; the placement angle of the solar power generation device is adjusted through the electricexpansion link so that the position and angle of the solar power generation device can be adjusted, the solar power generation device can better absorb sunlight, and the utilization rate of the solarpower generation device is increased; and meanwhile the device also has the advantages that the ground gripping mechanisms are firm, theft prevention is realized, working reliability is high, and monitored data is comprehensive.