In the technology, the water culture nutrient solution of a blueberry comprises the following elements: 95-110mg/L of N, 10-15mg/L of P, 125-135mg/L of K, 80-90mg/L of Ca, 20-28mg/L of Mg, 4-6mg/L of Fe, 0.3-0.6mg/L of B, 0.4-0.6mg/L of Mn, 0.04-0.06mg/L of Zn, 0.02-0.04mg/L of Cu and 0.002-0.004mg/L of Mo. A pH value of the water culture nutrient solution is 4.8 to 5.5.