In the midst of the dynamics of globalization and the industrial revolution 4.0, the 21st century education is increasingly evident in equipping the younger generation with relevant and adaptive skills. These skills include critical thinking skills, creativity, collaboration, and effective communication. In an effort to improve the quality of students' 21st century skills, the use of ethno-STEM integrated digital teaching material assisted by augmented reality (AR) has emerged as a promising innovative solution. The purpose of the study was to determine the effect of ethno-STEM integrated digital teaching material with augmented reality (DTM-AR) to promote students' learning and innovation skills. The research method used was a quasi-experiment with a posttest only. The population in this study were all students of class XI SMAN 12 Padang. The sample consisted of two groups, namely the experimental group and the control group, each consisting of 34 students. The results of the study were that Ethno-STEM integrated digital learning material with augmented reality were able to improve students' learning skills and innovation. Student' learning skills and innovation that can be improved by DTM-AR are critical thinking skills, creative thinking skills and communication skills.