The paper measures the effects of eight distribution scenarios which are designed according to distribution network level, whether self-dominated distribution or not, distribution district, whether logistics facilities deliver goods by category or not and different amount of terminals on inventory levels based on the logistics distribution practice of Sunning Company, and according to the results, research hypothesis are put forward. By collecting operational date of 58 firms during period 2011-2015 and constructing GMM mixture regress model, the paper verifies the hypothesis about the effects of different logistics distribution mode on inventory levels. The results show:1) The number of the terminal has a negative correlation with inventory turnover:the inventory turnover reduces 0.8 day with the increase of every 100 stores; 2) Distribution mode has no relationship with inventory turnover; 3)The inventory turnover of national chain enterprises are higher than that of the regional chain enterprises.