The paper presents a method of controlling the open flow that works by applying spatial and temporal periodic pulses to the system variables. The system can be controlled to the desired spatial periodicity by spatial periodic pulse. The temporal periodic pulse can stabilize the system to spatial fixed-point with temporal periodicity and spatial quasiperiodicity. In addition, if the strength of the temporal periodic pulse is looked as a new parameter of the controlled system, the system will eveolve from spatial fixed-point with temporal periodicity to spatiotemporal chaos when the strength of pulses is changed.