There is provided a liquid agrochemical composition having a stable water-diluted state, which comprises 0.5 to 30% by weight of one or more hydrophobic agrochemical active compounds, 1 to 20% by weight of one or more nonionic surfactants selected from the group consisting of a polyoxyethylene polyoxypropylene block copolymer and the like, 0 to 10% by weight of one or more anionic surfactant, 6 to 60% by weight of γ-butyrolactone, and 20 to 75% by weight of 1, 3-dimethyl-2-imidazolidinone and water-diluted solution obtained by diluting the liquid agrochemical composition with a 10 to 10,000-fold amount of water.本發明係提供具有安定的水稀釋狀態的液體農藥組成物,及以10至10,000倍之水量稀釋該液體農藥組成物所得之水稀釋溶液。該液體農藥組成物係包含0.5至30重量%之一種或更多種疏水性農藥活性化合物、1至20重量%的一種或更多種選自由聚氧乙烯聚氧丙烯嵌段共聚合物等所成組群的非離子性表面活性劑、0至10重量%的一種或更多種陰離子表面活性劑、6至60重量%的γ-丁內酯、及20至75重量%的1,3-二甲基-2-咪唑啶酮。