Abstract: The effects of three different fertilization treatments on the soil quality of the eggplant and Chinese cabbage rotation pattern were monitored and diagnosed by the field plot test. The results showed that through monitoring and diagnosis of soil physical and chemical properties of two crops,the trend of soil physical indexes in the eggplant season was coincident with the Chinese cabbage season. Fertilization could improve the soil physical properties, the recommended fertilization（OPT） treatment effect was more effective. Compared with the no fertilizer control（CK）,OPT treatment significantly reduced the soil bulk density,increased soil porosity,saturated water content and field water holding capacity （P<0.05）. All fertilization treatments had soil acidification,FP treatment was the most significant,and the soil pH was reduced by 13.01% compared with CK. The nutrients in each treatment increased with the extension of planting time. After the two rotation of the species,the electrical conductivity（EC）value, total nitrogen and cation exchange capacity（CEC） of the FP treatment and OPT treatment were significantly higher than CK（P<0.05）, but the exchangable calcium and magnesium contents were no significant difference with CK treatment（P>0.05）. The content of soil organic matter was significantly higher in the OPT treatment than in the FP treatment and CK（P<0.05）, which was 54.87% higher than CK. The results proved that replacing part of fertilizer with organic fertilizer could improve soil quality.

Key words: eggplant and Chinese cabbage rotation system, fertilization treatment, soil quality monitoring, diagnosis