In this paper an experimental method of producing blazed holographic grating by Fourier synthesis technique is described. We devised a simple and feasible optical arrangement and succeeded in making precise adjustment by means of interferometry. When Fourier components of a sawtooth groove were incoherently superposed with double exposure, desirable asymmetric groove profiles were obtained in Jiang shi possitive photoresist made in China. The measured results show that the grating has a fine blazing character. At the blaze wavelength of the grating the diffraction efficiency of the +1 order over 50%, The efficiency about 11 times higher than that of the -1 order. An experimental method for measuxing blaze angle of blazed holograpiiio grating is proposed, and the following problems are discussed： (1) how to effectively control the blaze wavelength in an experimental way, (2) the faotors affecting diffraction efficiency of blazed grating, (3) the effect of the stability of the laser and the adjustment of the optical arrangement on the experimental results. Finally, some suggestions are made on how to rai^e the diffraction efficiency and enlarge the ruling area of the grating in terror of experiment.