Fossil fuels such as coal, oil, and gas are non-renewable resources that take millions of years to form, making the shift to renewable resources essential. This paper discusses the application advantages and development status of two key renewable materials: Polylactic Acid (PLA) and Polyhydroxyalkanoates (PHA). PLA, a biodegradable polyester derived from lactic acid, and PHA, a natural polymer synthesized by microorganisms, offer promising alternatives to petroleum-based plastics. Their use in packaging, textiles, and medical fields helps reduce fossil fuel reliance and promotes the growth of renewable energy sources. They have been widely applied in different fields. They have been widely used for packaging material, including packages for food, delivery service, and so on. PLA and PHA can grow together to meet the different needs of society while protecting the planet’s environment. This paper aims to reduce dependence on fossil fuels and promote the development of renewable energy, thereby promoting sustainable development and environmental protection. Overall, the study highlights that the co-development of PLA and PHA can meet social needs and help protect the earth’s environment.
