In the world various types multiband flame detectors are made. Requirements to such flame detectors constantly increase. High-speed (no more than 5 ms) flame detectors with the reduction of optical noise are required. Flame detectors are required which are possible to unite into a system. In the article the high-speed flame detector with the reduction of optical noise by the compensation method is described. Requirements to technical parameters of a flame detector are formulated. Features of application of a compensation method of optical noise reduction in the flame detector are analyzed. The choice of spectral ranges of reception of radiation by the flame detector on the data basis on spectral distribution of radiation of burning and radiation of optical noise is carried out. The working prototype of the flame detector is designed. Results of the work carried out are necessary for the further manufacturing of the working prototype of flame detector. The results received will allow to carry out the experimental research of the flame detector work. Index Terms -Flame detector, optical noise, emission spectra of flame, compensation method.