his study undertook to evaluate the performance of stream purification equipment system, a combination of MBP (Micro Bubble Process) and AGBP (Aerobic Granular Biofilm Process). Based on the results obtained, the optimal HRT (Hydraulic Retention Time) of MBP and AGBP were set as 0.72 and 2.4 h，respectively. Results showed that with continuous operation of combined MBP and AGBP，it is possible to achieve a BOD, TSS and T-P removal efficiency of 85, 90 and 94%, respectively. It further confirmed that the quality of the stream water can be purified by increasing the circulation flow through water simulation evaluation, by applying the QUAL-NIER model. Consequently, this purification system can resolve the current problems of stream purification and dry stream.