The rich local ecological knowledge that needs to be excavated and sorted out is an important manifestation of the regionality of Lingnan Garden. The paper analyzes the research progress of Lingnan Garden. From the perspective of humanity, the research of Lingnan Garden has formed a complete research system and presented a mature and subdividing development trend. From the perspective of ecology, the research on the climate adaptability of Lingnan Garden is the main research direction, and the measurement of the whole ecological factors and the analysis of the ecological process of the whole landscape elements have not been completed. Lingnan Garden researches focus on the local natural environment and local material space carrier, but the related research of integrated local knowledge system still needs to be further improved. From the perspective of local ecological knowledge, the paper re-recognizes Lingnan Garden from the perspective of local knowledge. It proposes a local ecological knowledge framework adapted to the construction of Lingnan Garden, which is composed of three parts： site ecological relationships, local ecological skills and traditional ecological wisdom. It can provide a holistic, ecological, innovative and international research perspective for the construction of Lingnan Garden.