The production technology of melamine-formaldehyde product was elaborated. The influence of molding time, exhaust frequency, surface vanished coating and product type on formaldehyde migration was analyzed through experiment. The results showed that formaldehyde migration quantity decreases with prolonging of time and rising of temperature for the same raw materials of melamine-formaldehyde product in allowable molding time and temperature range; formaldehyde migration quantity of pure melamine-formaldehyde resin with vanished coating is lower than these without vanished coating; formaldehyde migration quantity varies with product shape.