The invention relates to a multifunctional fishpond deep-layer oxygenation water treatment machine, which consists of on-water equipment and underwater equipment, wherein the on-water equipment comprises an equipment carrier, a solar generator set, a wind energy generator set, a programmable controller and a material liquid storage tank, the solar generator set, the wind energy generator set, the programmable controller and the material liquid storage tank are arranged on the equipment carrier, an electric valve is arranged on the material liquid storage tank, the solar generator set, the wind energy generator set and the electric valve are connected with the input end of the programmable controller and are controlled by the input end of the programmable controller, the underwater equipment comprises a main pipeline, a direct current submersible pump, a parallel Venn machine set and a fountain aeration matrix group, the direct current submersible pump is arranged on the main pipeline, the parallel Venn machine set is formed by parallelly connecting a plurality of Venturi tubes, and the fountain aeration matrix group consists of a plurality of fountain aeration matrixes. The equipment is clean and environment-friendly, the investment is low, safety and reliability are realized, the unattended operation can be realized, the operation cost is low, the oxygenation efficiency is high, the whole water body of the sealed pond can form the relatively stable flowing state, good water body ecological environment is formed, and in addition, the effect can also be realized when the equipment is used in the frozen season in winter.