This study attempted to analyze the level of pre-service English teachers’ reflection performed for problem-solving from a multi-layered perspective. For this purpose, 94 teaching journals were analyzed, written by 20 prospective English teachers who reflected on their mentoring according to semi-structured problem-solving guidelines. The level of reflection shown in the teacher's journal of the participants was analyzed in terms of ‘reflection-breadth’ and ‘reflection-depth.’ First, the level of ‘reflection-breadth’ in each journal was analyzed based on the type of combination of procedural steps of problem-solving: Problem Determination (PD), Problem Analysis (PA), and Resolution (RS). Next, the ‘reflection-depth’ level refers to the types of combination of cognitive purposes (description, elaboration, justification) in each procedural step of problem-solving or the combination type of viewpoints from which the reflector approaches the problem (Teacher-view, Student-view, and Alternative view). As a result of the analysis, the reflection-breadth related to the problem-solving procedure ranged from level 1 (PD: the level of reflection where problems are described) to level 4 (PD+PA+RS: the level of reflection where problems are described, analyzed, and conclusions are drawn). In contrast, for each breadth-level, the reflection-depth is from PD-1 to PD-4 in the stage of determining the problem, the reflection-depth is from PA-0 to PA-3 in the stage of analyzing the problem, and the reflection-depth in the stage of reflection conclusion varied from RS-0 to RS-3. Based on these results, the implications for developing pre-service teachers' reflective ability regarding problem-solving were discussed.