The invention relates to an MVR (Mechanical Vapor Recompression) deamination and salt separation integral technology method, which comprises the following steps: (1) carrying out stirring, salt leaching and first-level heating and temperature raising on ammonia-containing concentrated water from electrodialysis to obtain concentrated water and steam condensate A which contain ammonia tail and hasthe temperature of 40-50DEG C; (2) carrying out second-level heating and temperature raising on the concentrated water of which the temperature is 40-50DEG C to obtain the concentrated water of whichthe waste water is removed, and the temperature is 70-80 DEG C; (3) after the concentrated water of the temperature of 70-80 DEG C is subjected to deamination and separation, obtaining deaminated freeammonium, deaminated concentrated water and evaporation and concentration high-salt waste water; (4) enabling the deaminated free ammonium to be subjected to sulfuric acid scrubbing for reaction to obtain ammonium sulfate, deaminated secondary steam and deaminated waste gas; changing the deaminated concentrated water into steam condensate B through water vapor subjected to heat exchange, and carrying out cooling precipitation and solid-liquid separation on the high-salt waste water subjected to evaporation and concentration to obtain solid salt; (5) taking most parts of steam condensate A andsteam condensate B as thermal fluid preheating waste water, and taking small parts of steam condensate A and steam condensate B as condensation water to enter a compressor. The MVR deamination and salt separation integration technology method has the advantages of obvious energy saving effect, low system operation cost and obvious economic benefit.