Abstract: Spatio-temporal distribution of rural land consolidation should be considered suitable for the size of the agricultural population. Lewis turning point theory was introduced for rural land consolidation study by genetic algorithm. According to the results of rural land consolidation dominance evaluation as the turning point appears, an optimized approach was constructed. Further more, the rural land consolidation mode selection and scheduling ideas in the light of characters of study area were put forward. The results indicated that the suitable agricultural population should be retained for the needs of agricultural development during urbanizing, and the spatio-temporal arrangements of rural land consolidation and mode selection should be coordinated with this process.