Abstract: Taking 4 perilla （Perilla frutescens L.）species that could be served raw as experiment materials,the dynamic observation and analysis on the relevant agronomic traits were carried out at differential stages.The correlation analysis,principal component analysis and other analysis were used,in order to provide reference for the breeding of high leaf yield in perilla.The results showed that,in all 4 species,the plant height,fresh weight in stems,number of primary branches and number of leaves per plant had similar patterns with rapid increase in the early and middle stages of vegetative growth period,slow increased in late stage and slight reduction in ripening and senescence phases.The fresh weight per plant increased initially and then descended.The highest weight was recorded in late stage of vegetative growth period and early stage of reproductive growth period.The correlation analysis of principal agronomic traits and fresh leaf yield indicated that the fresh leaf yield per plant had a significantly positive correlation with the number of leaves per plant and fresh weight in stems as well as had a positive correlation with the number of primary branches and number of stem nodes.These 4 elements had great decisive effects on the fresh leaf yield per plant.Together with the results of principal component analysis,it was comprehensively considered that the main morphological characteristics for perilla with high leaf yield are tall,more branches and large number of leaves.