The invention relates to the technical field of fertilizer, in particular to special water-soluble fertilizer for cucumbers. The special water-soluble fertilizer for the cucumbers is prepared from thefollowing raw materials in parts by weight: 10 to 20 parts of ammonium nitrate, 4 to 7 parts of triple superphosphate, 20 to 30 parts of potassium nitrate, 8 to 12 parts of potassium sulphate, 12 to16 parts of humic acid, 6 to 8 parts of compound micronutrient fertilizer, 2 to 8 parts of compound amino acid, 2 to 8 parts of compound bacteria and 30 to 40 parts of a traditional Chinese medicinalliquid and a suitable amount of water. According to the special water-soluble fertilizer for the cucumbers, provided by the invention, special humic acid water-soluble fertilizer for the cucumbers isprepared according to the basis of soil fertility and a fertilizer requirement law of the cucumbers; water and fertilizer are integrated, are uniformly distributed into plant root soil, and meet the requirements of the cucumbers on various nutrients; accurate fertilizer application is realized; the fertilizer utilization rate is improved; an application test result shows that the yield can be increased by over 8.4 percent by applying the special water-soluble fertilizer disclosed by the invention to the cucumbers as compared with that achieved by applying conventional commercially available water-soluble fertilizer; the cucumber quality is obviously improved; and the produced cucumbers are qualified and pollution-free.