An intelligent wearable outfit, and an external information platform and a computer program product which are in conjunction with the intelligent wearable outfit, provide various functional modules for measuring physiological signals in a modular design. An appropriate functional module (or even more than one functional module if desired) may be selected therefrom and arranged in the wearable outfit to extend and change functions of the wearable outfit, making the intelligent wearable outfit suitable for most users who can manage personal health appropriately.