The invention relates to a hydraulic control system for sequential control of hydraulic pile hammers. A pressure oil device is respectively communicated with a lower hydraulic cavity, a lower accommodating cavity and a control cavity of a first cartridge valve, a lower accommodating cavity and a control cavity of a second cartridge valve, a first oil port of a sequence valve and a pressure oil port of an electromagnetic valve through first one-way valves; an upper hydraulic cavity is respectively communicated with an upper accommodating cavity of the first cartridge cavity, an upper accommodating cavity of the second cartridge valve and a lower accommodating cavity of the third cartridge valve; a lower hydraulic cavity is respectively communicated with the lower accommodating cavity of the first cartridge cavity, the lower accommodating cavity of the second cartridge cavity and the first oil port of the sequence valve; the upper accommodating cavity of the first cartridge valve is communicated with the upper accommodating cavity of the second cartridge valve; the upper accommodating cavity of the second cartridge valve is communicated with the lower accommodating cavity of the third cartridge valve; and control ports of the electromagnetic valve are respectively communicated with a control cavity of the sequence valve and a control cavity of the third cartridge valve. The hydraulic control system is high in control efficiency, can control the piling energy and frequency, and belongs to the technical field of hydraulic piling.