Abstract: Maximum entropy modeling (MaxEnt) was used to identify potential and suitable habitat and aggregation distribution areas for 34 national key protected species in Beijing. The results showed that the suitable habitat for key protected species in Beijing was 9 821.45 km2, distributed at transition zone between mountain and plain, valley with an altitude of 400-700 m and water surrounding area. Species aggregation distribution area was 2 248.43 km2, where there were about 75% of key protected species of Beijing. Suitable habitat and aggregation distribution of protected species was influenced by precipitation, landform and land use types. Identification suitable habitat and aggregation distribution of protected species was for ecological protection.