An instant dynamic strategy method is provided for dynamically providing a strategy according to external sensed information. The method includes receiving external sensed information; analyzing the sensed information so as to generate target data and conditional data according to user requirements; and transmitting the target data and the conditional data to an external dynamic strategy module such that the dynamic strategy module collects and analyzes strategic data according to the target data and the conditional data so as to generate a strategy. Compared with prior art that provides strategies based on fixed databases and fixed strategic rules, the present invention takes into account external information so as to achieve a desired strategic effect.