The invention discloses a production method of a germinated brown rice puffed cake, and belongs to the technical field of food processing. The germinated brown rice puffed cake is prepared from the following raw materials in percentage by weight: 30-70% of germinated brown rice, 20-60% of glutinous rice, 1-5% of plant oil, 2-6% of white granulated sugar and 1-5% of maltodextrin. The production method comprises the following steps: after regulating water content, uniformly mixing the germinated brown rice, glutinous rice, plant oil, white granulated sugar and maltodextrin in a certain proportion, tempering the mixture in a seal bag for a night, then carrying out puffing technical treatment on the mixture through a puffing machine, wherein puffing temperature is 235-255 DEG C and the charging rate is 8-20g; and cooling and packaging to obtain the germinated brown rice puffed cake. The production method disclosed by the invention is simple in process, low in cost and suitable for scaled production, and is capable of solving industrial problems of an existing germinated brown rice product which is poor in taste, low in processed product quantity, low in technical content and the like. The germinated brown rice puffed cake produced by the method, as leisure functional food, tastes crisp, and is easy to digest and absorb, complete in nutrition, convenient to eat and long in shelf life.