The aims of this study are to show the data on faunas and communities of aquatic insects in the Seo My Ty Stream in Ta Van Commune and the Nam Cang Stream in Nam Cang Commune in the Hoang Lien National Park, Lao Cai Province. Ta Van Commune belonging to the core area of the National Park, while Nam Cang Commune is located in the buffer area of the Natinal Park. | Data on aquatic insects in the Seo My Ty and Nam Cang streams, Hoang Lien national park, Lao Cai province, Viet Nam