According to the Textile Exchange and international brands’ commitment to increase the amount of recycled polyester fiber by 45% in 2025, Taiwan's textile industry has played an important role in cooperating with b rands to move towards sustainability. As textile resource reutilization has become a mainstream trend, the commercialization of the recycled polyester fiber production will soon be realized. Meanwhile, it is important to disclose the environmental and soc ial footprints of the products and processes, as well as the data and information on the environmental impact of the full life cycle of textile resource, which remains unknown. Therefore, this project aims to analyze international methodologies for environmental impact assessment of textiles, and establish a procedure to 簡要版摘要 conduct an onsite assessment in textile recycling. This project also collects and analyzes international cases of environmental impact assessment as well as science based targets of carbon reduction, in order to evaluate the feasibility of introduction relevant approaches in Taiwan. As a result, we establish a procedure to conduct an onsite assessment in textile recycling according to ISO 14040；Communicate with 5 mills and collect the environmental data onsite, including Brand’s suppliers；The results of the environmental impact assessment of“Circular apparel”for the following categories are, Climate Change 4.88kg CO2 eq、Eutrophication 1.37×10-2 kg PO4 - eq、Abiotic Resource Depletion, Fossil Fuels 54.76MJ、Water Use 8.05m3、Chemistry 9.9Chemistry Unit. In terms of material, the result of environmental impact assessments for Climate Change in waste textile recyclable process is higher than bottle recycling, but less than the virgin material use. For the case study of environmental impact assessments and science based targets, the research founded 10 corporations in Taiwan approached to SBTi scheme, only one already set up the near-term science based targets , others have just made the commitment；A lot of corporations still do not know the SBTi scheme. In future, the research results of this pro ject could help textile sectors to set up the science based targets according environmental impact assessments and incorporate the use of recycled materials as its reduction strategy.

Circular Textile Resource, Enviromental Impact Assessment, Science Based Target