Abstract: In order to evaluate the coupling relationship between land consolidation (LC) and countryside construction, the connotation, research methods, index system and mathematical model of land consolidation efficiency (LCE) were proposed. And took 5 land consolidation projects (LCPs) of Daiyue District as examples, combined analytic hierarchy process(AHP), comprehensive evaluation method, geographic information system (GIS) technology, LCE were studied. The results indicated that the LCE of 23 countries in the 5 LCPs could be divided into 4 types: high efficiency, sub-high efficiency, moderate efficiency and low efficiency. There are complex positive correlation between investment and LCE: the values of LCE show an order of “national > provincial > city (District)” at the project level, and the larger the total investment and the scale, the larger the value of LCE at the village level. Our study derived desired results, which may provide scientific basis for evaluating and harmonizing the coupling relationship between LC and the new countryside construction, and promoting the sustainable development of LC and new countryside construction.