[Objective] Investigating the temporal-spatial difference features of urban land economic density of the blue economic zone in Shandong Peninsula in order to provide a sensible planning for land use pattern. [Methods] Data was collected from urban land economic density of blue economic zone(thirty-six country-level cities) in Shandong Peninsula during 2005-2011. Coefficient of spatial variation and autocorrelation were used. [Results] (1) The average density of urban land economy showed a rising trend, increasing from 546 million yuan/km² to 972 million yuan/km². Urban land economic density among cities had significant differences, the higher values of land economic density located in Penglai, Longkou and Zhaoyuan City; (2) Regional differences of land economic density dwindled, comparatively there were significant differences in relative development efficiency for all cities. The highest relative development efficiency was in Longkou City; Penglai was the lowest and it also showed a negative development as compared with others; (3) The spatial differences of land economic density reduced gradually, and the spatial centralization had converted from Rongcheng and Wendeng City to Penglai, Longkong and Zhaoyuan City. [Conclusion] It showed the distributional pattern was uneven, and the trend was increasing on the urban land economic density of blue economic zone in Shandong Peninsula, and the value was comparatively higher in the east than that in the west.