[Objective] The ecological condition in the Niulan River was investigated to provide bases for ecological management and restoration project. [Methods] Based on the investigation of water quality

riparian zone and pollution sources of the study reach

a comprehensive evaluation method was used to evaluate the survey data. [Results] The natural condition of Kraal River is good. Of which

reaches of 8-10 are in the state of nature

3

5-7 reaches are in near natural state

1

2

3 reaches are in a degraded natural condition. The water quality of Kraal River is general poor. If river harnessing being continued

the water quality would improve from downstream to upstream gradually. [Conclusion] The main pollution sources of the study reach are manure

garbage pollution and sewage pollution. Therefore

in the future governance

these pollution should be focused.