The present invention relates to an anti-tetanic agent comprising a Sasa extract; an anti-fungal agent comprising a Sasa extract and an organic acid; an anti-viral agent comprising a Sasa extract; an anti-microbial agent comprising Sasa tannin; and an anti-microbial composition comprising a Sasa extract and an organic acid.本發明係關於含有矮竹(Sasa)萃取物之抗破傷風菌劑,含有矮竹萃取物及有機酸之抗黴菌劑,含有矮竹萃取物之抗病毒劑,含有矮竹單寧之抗菌劑以及及含有矮竹萃取物及有機酸之抗菌性組成物。