Abstract: This paper using Syzygium samarangense cutting plants as materials to select evaluation characters and index classification to probe into the quality criterion of Syzygium samarangense cutting seedlings, and measure and analyze root numbers, root diameter, root length, root weight, plant height, stem diameter, shoot numbers, shoot length and shoot leaf numbers under the rapid propagation system of germchit intelligent monitor and control.The results showed that there was significant or remarkably significant positive correlation between plant height with other parameters, while there was also the same correlation between stem diameter with other parameters.The characteristics of plant height and stem diameter can reflect aboveground growth conditions better.The relationships of root numbers, root diameter and root length were weak, which can reflect root system developed degree by summarizing their traits.The plant height, stem diameter, root numbers, root diameter and root length of Syzygium samarangense cutting seedlings were selected as its quality criterion evaluation characters.In this paper we graded the evaluation character indexes and established the quality criterion of Syzygium samarangense cutting seedlings.