Objectives This study aims to find out what scaffolding types are for input reinforcement in CLIL (Content and language Integrate Instruction, CLIL) for elementary English learners and explore specific methods and strategies for scaffolding support. Derived from the study By applying the scaffolding strategy described in this study to elementary science content integration classes, an appropriate scaffolding strategy is presented.
 Methods For the purpose of the method study, the concept of scaffolding, the definition of scaffolding, and the categories and types of scaffolding were established by analyzing the literature on the concept of scaffolding and CLIL studies at home and abroad. In order to develop a list of detailed strategies for scaffolding, the strategy lists from previous studies were cross-occupied and sub-strategies that fit the functions and characteristics of the upper strategy were placed.
 Results The CLIL scaffolding strategy was largely divided into four scaffolding supporters: teachers, fellow learners, textbooks, and technology, and instructional, affective, and cognitive weights. For each emptying strategy, a list of scaffolding strategies that can be applied to actual CLIL classes was identified. In addition, the scaffolding strategy was applied by taking the CLIL class, the science content of the 3rd grade of elementary school, as an example.
 Conclusions The scaffolding strategy derived from this study is a fixed scaffolding strategy that teachers can plan in advance, and it is also necessary to study a responsive scaffolding strategy that actively supports according to the response and level of students during sign language. In addition, scaffolding strategies centered on teacher support are common, but with the development of the digital technology environment, scaffolding support that develops learners' self-directed learning ability should also be established. The language use strategy for the class operating language of the CLIL class is also necessary for the scaffolding support strategy, and follow-up research on this is required.