Abstract: Recent researches in instructional strategies on Quantum Physics (QP) revealed that it is not an easy task but certainly some important approaches can be applied to enhance students’ conceptual knowledge of quantum concept. This study presents a critical review of research related to conceptual understandings of concepts in quantum physics. The findings reviewed address, instructional argumentation on Physics Education Research (PER), relationship between conceptual knowledge of high school and college students, the influence of technological innovations and class materials in the classroom, the development of diagnostic tools on understanding of concepts in quantum physics. This synthesis of the current state of research regarding instructional strategies and useful tools provides a comprehensive framework from which future research can be stimulated and ideas about the design and implementations are discussed.