To provide a hot-melt adhesive agent which has excellent retention strength and anti-fragrance property, and shows little residual adhesive and unpleasant odor.A hot-melt adhesive agent having a thermoplastic block copolymer (A), the (A) being a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises an unhydrogenized triblock type styrene isoprene block copolymer (A1) and an unhydrogenized styrene butadiene block copolymer (A2), and the hot-melt adhesive agent does not comprise an α-methylstyrene class resin (B) in an amount of not less than 5 parts by weight based on 100 parts by weight of the total weight of (A) and (B).提供一種熱熔黏著劑，其具有優良之留置強度和抗香氣性質，並且呈現出黏著劑幾乎不殘留與幾乎沒有令人討厭之氣味。一種熱熔黏著劑，具有一熱塑性區段共聚合物(A)，該(A)係一乙烯基類芳香族碳氫化合物與共軛二烯類化合物之共聚合物，其中該熱塑性區段共聚合物(A)包括一未氫化三區段型苯乙烯異戊二烯區段共聚合物(A1)與一未氫化苯乙烯丁二烯區段共聚合物(A2)，而且以(A)與(B)之總重之100重量分為基準，該熱熔黏著劑不包括一數量不少於5重量分之α-甲基苯乙烯類樹脂(B)。
