The quantity and antioxidant activity of functional ingredients in various parts of Alpinia uraiensis Hayata were investigated in this study. The ethanolic extracts from the leaves blades, inner cores, petioles, fine roots, stem, outer cores, seeds, rhizomes and main roots of A. uraiensis Hayata were characterized by their antioxidant properties, sugars and high-performance liquid chromatography (HPLC) analysis. These antioxidant properties and sugars have shown a wide range of variety with significant differences among various plant parts. HPLC chromatogram has also demonstrated that all plant parts contain significantly functional ingredients at absorbance 254 nm with various molecule distribution patterns and quantity. The seeds have the best total phenolics, 2,2-diphenyl-1-picrylhydrazy scavenging activity, total sugar and moderate reducing power activity. This study provides good information of functional ingredients from ethanolic extract of different parts of the A. uraiensis Hayata plant for food and medicinal use.