Molybdate and tungstate were synthesized by the standard solid state reaction technique or co-precipitate method traditionally. But all above-mentioned methods have some unavoidable disadvantages, such as complicated technics, longer time, uncompletely production, so that can not apply to industry. A novel synthesis technology by laser sintering is given in this paper and it could overcome the above-mentioned shortcoming effectively. The sample of La2(MoO4)3 had been synthesized using this new fabricating method for the first time. It is shown that sample of La2(MoO4)3 possesses compact structure and good figure. The analyses by a Raman spectrometer and X-ray diffractiometer reveal that the raw material reacted completely and the sample is the same structure. The investigation of the specimen surface by a scanning electron microscope and energy-dispersive spectrometer shows that the surface is composed of small crystal conglomeration in which the stoichiometric proportion of elements is the same.