Melamine monomer's migration quantity from melamine tableware was determined by high performance liquid chromatography. The migration behavior of melamine monomer in two kinds of different material (urea-formaldehyde resin covered by melamine resin and melamine resin produce) were studied. The impact of immersion time and immersion temperature on melamine monomer's migration was also studied. The test results showed that the migration quantity increases with immersion temperature rise; the migration quantity increases with migration time increase at specific temperature. Ninety-sixth melamine tableware bought from market were inspected, including fifty-one melamine resin produce and forty-five urea-formaldehyde resin covered by melamine resin. The pass percent of melamine monomer's migration quantity of urea-formaldehyde resin covered by melamine resin was lower than the melamine resin produce.