In the study, the effect of the "Reading Support Program" (RSP) of primary school students' levels of fluent reading, reading comprehension, reading motivation and reading attitude on the treatment of reading difficulties was investigated. The main purpose of the research is to develop RSP as a program for students with reading difficulties and to test the effectiveness of the developed RSP. Experimental design was used in the study, and one group pre-test post-test model among pre-trial models was used. The study group of the study consists of six primary school third grade students who have reading difficulties. Students in the research; "False Analysis Inventory" was used to measure fluent reading and reading comprehension skills, "Reading Motivation Scale" to measure reading motivation, and "Attitude Towards Reading Scale" to measure reading attitude. In the study, descriptive statistics and Wilcoxon signed rank test were used to analyze students' fluent reading, reading comprehension skills, reading motivation and attitude towards reading. It was found that RSP positively changed participants' fluent reading skill, reading comprehension skill and attitude level towards reading in a statistically significant way in favor of posttest. As a result of this research, it was revealed that RSP has a positive effect on fluent reading, reading comprehension, reading motivation and attitudes towards reading of students who have reading difficulties.