The invention discloses flue gas denitration equipment, which comprises a mixing chamber, a denitration chamber, a conveying pipe device, an ammonia spraying device and a gas inlet pipe. The conveying pipe device is fixedly connected between the mixing chamber and the denitration chamber, the gas inlet pipe is fixed to one side of the bottom of the surface of the mixing chamber and communicates with the mixing chamber, one end of a zigzag pipeline is communicated with one side of the top of the mixing chamber, the end, away from the mixing chamber, of the zigzag pipeline is communicated with one side of the bottom of the surface of the denitration chamber, a first-stage mixing device is arranged in the zigzag pipeline and close to the mixing chamber, and a secondary mixing device is arranged in the zigzag pipeline and is close to the denitration chamber. The invention relates to the technical field of denitration equipment. According to the flue gas denitration equipment, the purpose of uniform mixing is achieved, flue gas and ammonia gas can make full contact, mixing is rapid and uniform, follow-up denitration work is facilitated, emission of harmful substances is reduced, pollution to the environment is reduced, human health is facilitated, and the use performance is improved.