Recently,soft and stretchable strain sensors that can be incorporated into textiles have attracted significantly increasing interest for use in a diverse range of applications.However,the simple fabrication of stretchable devices that exhibit excellent sensing performance,are highly durability and are a good fit to the human body remains a challenge.Herein,we describe the fabrication of a new flexible strain sensor on a traditional polyester fabric using a one-step method that involves the reduction of graphene oxide(GO)using ascorbic acid(L-AA).The resulting textile-based strain sensors could be washed,exhibited long-term stability,and had a negative linear response that gave a good sensing response when used in wearable applications.In addition to effectively detecting human motions,the textile was modified such that it could detect ultra-large deformations.The impressive mechanical performance,durability and the ability to capture and monitor a variety of human actions and motions mean that these textile-based sensors have great potential in biomonitoring,soft co-robotics,and human-machine interactions.