Hydrothermal liquefaction (HTL) of macroalgae residue was accomplished with seven kinds of amine catalysts for chemical and bio-oil production. The effect of HTL conditions on product distribution was investigated, and results showed that both temperature and amines concentration have significant effects on conversion of macroalgae residue to liquid products and bio-oil. The effect of different amines on composition of liquid products and bio-oil was also studied. The main ingredient of liquid products were organic acids, and the yield of organic acids declined with the increase of alkyl chain in amines. The yield of bio-oil increased with the addition of alkyl chain for primary amines and tertiary amines, while decreased for secondary amines. Methylamine had the highest yield of liquid products of 79.09 wt%, and the highest bio-oil yield of 24.37 wt% was obtained in the presence of triethylamine. (C) 2017 Elsevier Ltd. All rights reserved.