The invention discloses a water culture nutrient solution of spinach beet. The water culture nutrient solution comprises macroelements, microelements and water as well as calcium nitrate tetrahydrate, potassium nitrate, ammonium dihydrogen phosphate, magnesium sulfate heptahydrate, ammonium nitrate, boric acid, copper sulfate, sodium silicate, magnesium sulfate, cobalt chloride, nickel chloride, potassium sulfate, potassium chloride, ethylene diamine tetraacetic acid, ferrous sulfate septihydrate, manganese sulfate tetrahydrate, copper sulfate pentahydrate, ammonium nitrate, calcium carbonate, potassium iodide, sodium chloride, ferric sulfate, lead acetate and sodium citrate. According to the water culture nutrient solution of the spinach beet, the absorption utilization rate is high and the waste caused by nutrition excess or deficiency resulted by no pertinence of a water culture nutrient solution of the spinach beet in the past is avoided.