NOVELTY - Production of solar cell in fluorine-containing wastewater comprises collecting high fluoride acidic water, acidic water and alkaline wastewater; adding calcium carbonate powder; adding soluble calcium salt aqueous solution or calcium-containing precipitator, and reacting to obtain suspended solids of calcium fluoride, where calcium-containing precipitator is calcium carbonate dry powder or calcium carbonate and water solid-liquid mixture; carrying out solid-liquid separation, collecting calcium fluoride, washing calcium fluoride particles, and drying to obtain calcium fluoride.    USE - Method for production of solar cell in fluorine-containing wastewater (claimed).    ADVANTAGE - The method does not produce secondary pollutants, where secondary pollutant is calcium fluoride sludge or chloride ions to the calcium fluoride, and good particle size and purity of the resulting product as a chemical feedstock.    DETAILED DESCRIPTION - Production of solar cell in fluorine-containing wastewater comprises    (A) collecting high fluoride acidic water, acidic water and alkaline wastewater in the storage tank;    (B) adding more than 90% of calcium carbonate powder purity into wastewater, the resulting aqueous solution of soluble calcium in the calcium ion concentration of 10-300 g/l;    (C) the calcium salt solution storage tank through an overflow pipe, adding soluble calcium salt aqueous solution or calcium-containing precipitator into the reaction crystallizer of storage tank reactor, the molar ratio of calcium and fluoride is 0.5:1-1.5:1, reacting at 30-90 degrees C for 0.5-3 hours to obtain suspended solids of calcium fluoride, calcium-containing precipitator is calcium carbonate dry powder or 5-50% calcium carbonate and water solid-liquid mixture;    (D) carrying out solid-liquid separation, collecting calcium fluoride, washing calcium fluoride particles, and drying to obtain calcium fluoride used as solvent;    (E) solid-liquid separation to obtain crystal mother liquor, passed into mixing tank, mixing the collected low fluorine acidic water in a mixing tank. controlling pH at 2-6, fluoride concentration is 80-500 mg/l;    (F) mixing soluble calcium aqueous solution and the circulation liquid to obtain four bottom fluid, introducing into fluidized bed crystallizer, the fluorine in the mixed solution of soluble calcium salt aqueous solution of calcium/fluoride molar ratio is controlled at 5:2:1, alkaline wastewater is used for adjusting pH of the fluidized bed, where the inlet fluidized ion concentration is less than 150 mg/l, controlling at 100-20000 m/hour, to ensure the seed particles in the fluidized bed in fluidized state, the circulating liquid and particle is not bonded, fluidized bed reaction is at room temperature, the seed crystal has grown up to 500-3000 microns, removing calcium fluoride particles from the bottom of fluidized bed, and complementing the new seed crystal; and    (G) fluidized bed section water overflows to sedimentation tank, a solid-liquid and liquid-phase separation, separating supernatant as circulating fluid, recycling back to the fluidized bed, and the rest is discharge as effluent.