Abstract:Based on the current talent bottleneck problems in the transformation and upgrade of small and medium-sized enterprises in the Pearl River Delta-, in order to analyze the talent structure and the types of talent liquidity characteristics from the enterprise perspective, the research built different talent flow influence factors according to the principle of Price-Mueller employee turnover model. The liquidity factors of different types talent , the talent development modes and the relationship between modes and the enterprise transformation and upgrade of the enterprises were analyzed from the angle of risk ratio using multi-classification Logistic econometric analysis model. The results showed that the current mode of talent structure and the different types of talent liquidity had different impactions on the transformation and upgrade of small and medium-sized enterprise in the Pearl River Delta. The impaction of management talent was the largest and technical skilled talents were the smallest. The enterprises should recruit and retain talents with different talent development mode according to their own talent structure features. With the improvement of personnel structure mode, the talent liquidity is alleviated, which assurance the smoothly transform and upgrade from the perspective of talent supply.