The invention relates to a boreal coniferous forest litter decomposition method improving the ecological service function. According to the boreal coniferous forest litter decomposition method improving the ecological service function, physical, chemical and biological means are adopted to adjust the micro-ecological environment of a coniferous forest litter layer, litter decomposition is accelerated, the physicochemical property of surface soil is improved, and therefore the purpose of improving the ecological service function of the coniferous forest is achieved. The boreal coniferous forest litter decomposition method improving the ecological service function is beneficial for the improvement on the soil structure, increase of soil nutrients, the improvement on the water conversation capacity of the litter layer and the like, so that the potential ecological service function of the coniferous forest is improved, and healthy and sustainable development of the boreal coniferous forest ecological system is promoted.