Abstract: In order to find out the pureness of parental Carassius auratus Tungting and make an analysis of morphological genetic law between parent and progeny, the study sets out to test 27 parents and 32 offspring of Carassius auratus Tungting from Beiming Lake. Statistics analyses of its seven comparable and countable properties, which includes mean value, standard variance, and coefficient of variance of each property, in combination with x2 test of general variance of each property between parents and offspring shows 1) that the mean values of each property are close but on average offspring have one more lateral scale compared to their parents’; 2) that the coefficient of variance is also close while mostly offspring’s is smaller than their parents’; 3)that the value of x2 test, 0.0172, reveals that there is no significant difference between the general properties of parents and those of offspring. Based on the above statistical analyses, the study infers that proterozoic Carassius auratus Tungting from Beiming Lake have the property of high pureness.