The invention relates to a product method of acrylamide crystal using clean-up scraper evaporator to do freezing, concentration and crystallization, and then centrifugation, dehydration, dehumidification integrated machine. The techique programe contains characteristic steps are: (1) getting aqueous solution of acrylamide high concentration acrylamide aqueous solution after low concentration acrylamide aqueous solution going across clean-up scraper evaporator;(2) getting high purity acrylamide crystal afer the high concentration acrylamide aqueous solution is centrifugated, dewatered and dried. Good effects are: mainly overcoming large energy consumption, equipment investment, and complex techque and so on of using ebullated bed to produce acrylamide crystal, hasing projecting good effect of simple techique, easy operation and high purity and so on.

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