The utility model provides a flow control valve used for a combustor, and belongs to the technical field of control valves. The flow control valve used for the combustor solves the technical problems that the gas flow of an existing combustor is uneasy to control and the existing combustor is unsafe to use. The flow control valve used for the combustor comprises a valve body and a front end cover. A gas inlet pipe, a gas outlet pipe and an ignition gas pipe are arranged on the outer surface of the valve body. A spacer block is arranged in the valve body, a first through hole is formed in the spacer block, the gas inlet pipe is communicated with a second containing cavity, and the gas outlet pipe and the ignition gas pipe are communicated with a first containing cavity respectively. A valve element is arranged in the first containing cavity, a shaft hole coaxial with the first through hole is formed in the rear end of the valve element, and an ignition gas hole and a gas outlet hole communicated with the shaft hole respectively are formed in the outer surface of the rear end of the valve element. When the valve element rotates in the first containing cavity, the ignition gas pipe is communicated with the ignition gas hole and the gas outlet pipe is communicated with the gas outlet hole. An ignition gas channel and a combustion gas channel supply gas separately, so that when the ignition gas channel conducts ignition, the gas supply flow is stable, the ignition efficiency is high and the ignition process is safe.