The invention relates to a waterproof architectural filling material and application thereof. The waterproof architectural filling material comprises the following components in parts by weight: 100 parts of ordinary Portland cement, 0.5-1 part of cocamidopropyl hydroxy sulphobetaine, 0.5-2 parts of waterproofing agent, 0.5-2 parts of alundum powder and 40-60 parts of water. The waterproofing agent is composed of the following components in parts by weight: 40-60 parts of tridecafluorooctyltriethoxy silane and 40-60 parts of n-octyl triethoxy silane. The waterproof architectural filling material has the advantages of simple formula, low cost, favorable waterproofing property and favorable compression resistance.