Abstract Aim/Purpose – Green constraints become urgent action for Vietnam, affecting sustainable development and human health and living environments. There are numerous lessons learned for Vietnam from reduction of the impact of environmental pollution and climate change on living conditions and the economy from various organizations worldwide. One of the most effective measures for sustainable development is green investment. Green investment can generate a lot of environmental and human benefits but still faces a difficulty and constraints. This article focuses to analyze the barriers to green investment as well as thereby finding solutions for these barriers. Design/methodology/approach – This study employs a comprehensive analysis of various barriers to green investment, including policy and regulatory, financial, technological, market, and institutional obstacles. The research sample focuses on organizations and entities involved in green investment in Vietnam. Findings – This study identifies key barriers to green investment in Vietnam, including policy, financial, technological, market, and institutional obstacles. Policy barriers stem from unstable and unclear regulations, while financial barriers involve high costs and limited credit support. Market barriers are linked to low consumer awareness and unfair competition, technological barriers arise from high development costs and infrastructure gaps, and institutional barriers are due to bureaucratic hurdles. The study suggests solutions to address these barriers to facilitate green investment. Research implications/limitations – This research highlights key obstacles to sustainable development efforts in Vietnam but may be limited by the scope of data available within the country and by unstable and unclear policy. Originality/value/contribution: This paper contributes to the understanding of green investment challenges in Vietnam and offers practical recommendations to enhance sustainable development efforts by addressing specific barriers. Keywords: Barriers, green investment, sustainable development, solutions