Agricultural cultivation through production and application of inputs emitted greenhouse gases (GHGs) into the atmosphere. However, the contribution of emissions from agriculture are not popular concentration in the comparison with other sectors. Research on GHGs emissions from horticulture will significant contribute to climate change adaptation strategies from a local to global scale. Our research used life cycle assessment (LCA) methodology and a Japanese environmental impact assessment software (MiLCA) to estimate GHGs emission from taro and sweet potato (SP) cultivated in Kien Giang province, Vietnam. The emission calculation based on one hectare of growing area in a year and one kilogram of tuber from taro and SP cultivation are 19,660 CO₂e ha^-1 year^-1, 15,740 kg-CO₂e ha^-1 year^-1, 0.53 kg-CO₂e t^-1 and 0.26 kg-CO₂e t^-1. The emission data from taro and SP cultivation will contribute to agricultural planning and conversion to achieve sustainable development goals.