The invention discloses a special nutrient fluid for Syzygium samarangense. The special nutrient fluid for Syzygium samarangense is prepared from the following raw materials in parts by weight: 15-20 parts of urea, 2-3 parts of asparamide, 3-5 parts of ferric citrate, 1-2 parts of boric acid, 3-5 parts of potassium dihydrogen phosphate, 12-16 parts of ammonium nitrate, 3-5 parts of diammonium phosphate, 3-5 parts of potassium sulfate, 1-2 parts of borax, 0.5-1 part of zinc chloride, 0.5-1 part of sodium molybdate, 0.5-1 part of manganese sulfate, 0.8-2 parts of ferrous sulfate, 1-2 parts of magnesium sulfate, 0.8-1.2 parts of copper sulfate, 6-8 parts of humic acid, 5-10 parts of effective microorganism solution, 3-5 parts of sodium dodecyl benzene sulfonate, 10-20 parts of thiophanate methyl, 0.6-2 parts of salicylic acid, 1-6 parts of compound sodium nitrophenolate, 40-50 parts of white carbon black, 20-30 parts of ethanediol, 1-5 parts of preservative and the balance of water, totaling 1200 parts. The special nutrient fluid for Syzygium samarangense has comprehensive formula nutrients, and can not pollute the environment or injure the human body after being applied. When the plant nutrient fluid is used for soilless culture of Syzygium samarangense, the Syzygium samarangense can grow vigorously, can not easily die, and is capable of effectively enhancing the percentage of fertile fruit and yield of the Syzygium samarangense respectively by 14% and 10%.