We present the results of a high resolution study with the Submillimeter Array towards the massive star forming complex G9.62+0.19 .
Three sub-mm cores are detected in this region .
The masses are 13 , 30 and 165 M _ { \sun } for the northern , middle and southern dust cores , respectively .
Infall motions are found with HCN ( 4-3 ) and CS ( 7-6 ) lines at the middle core ( G9.62+0.19 E ) .
The infall rate is 4.3 \times 10 ^ { -3 } ~ { } M _ { \odot } \cdot yr ^ { -1 } .
In the southern core , a bipolar-outflow with a total mass about 26 M _ { \sun } and a mass-loss rate of 3.6 \times 10 ^ { -5 } ~ { } M _ { \odot } \cdot yr ^ { -1 } is revealed in SO ( 8 _ { 7 } -7 _ { 7 } ) line wing emission .
CS ( 7-6 ) and HCN ( 4-3 ) lines trace higher velocity gas than SO ( 8 _ { 7 } -7 _ { 7 } ) .
G9.62+0.19 F is confirmed to be the driving source of the outflow .
We also analyze the abundances of CS , SO and HCN along the redshifted outflow lobes .
The mass-velocity diagrams of the outflow lobes can be well fitted by a single power law .
The evolutionary sequence of the cm/mm cores in this region are also analyzed .
The results support that UCÂ H ii regions have a higher blue excess than their precursors .