Disclosed is a dynamic load differential pressure protection balance valve controlled by a three-level overflow valve. The dynamic load differential pressure protection balance valve controlled by the three-level overflow valve is composed of combination connection of a balance valve and a two-level protection overflow valve and a three-level overflow valve and a flow compensating one-way valve. The dynamic load differential pressure protection balance valve controlled by the three-level overflow valve is characterized in that a one-way valve core (6) is installed in a hole of a main valve core (5) in a sleeved mode. A right end spring cavity controlling the main valve core (5) is composed of a hydraulic control one-way valve whether is communicated with an A cavity or a B cavity. Several uniformly distributed axial direction small grooves are formed in a large cylinder at the right end of the main valve core (5). A holding cavity is communicated with the A cavity and is arranged between a main spring seat (10) and a valve body (3). A throttling opening of the two-level overflow valve is the combination that a fixing throttling opening and a variable throttling opening are in series connection. The three-level overflow valve and the flow compensating one-way valve are arranged on the left cavity of an overflow valve core (14). The control principle is that opening of the overflow valve core (14) is controlled by force produced by the fact that an adjusting pressure value of the three-level overflow valve multiplies a sectional area of the overflow valve core (14) and spring combination force. Closing of the overflow valve core (14) is completely controlled by spring force.