This study aimed 1) to construct the reading comprehension cxercise based on English newspapers and magazines using task-based approach based on the 75/75 efficiency criterion and 2) to study the reading achievement of reading comprehension of mathayomsueksa 4 students based on English newspapers and magazines using task-based approach. Thesample group of this research was randomly selected 30 matthayomsuekse 4 student of Yanawate Wittayakom School, Bangkok metropolis. The research tools consist of 1) five English lesson plans; 2) five developed reading comprehension exercises based on English newspapers and magazines using task-basedapproach; and 3) reading achievement test, used as pretest and posttest. The mean, standard deviation and percentage were used to analyze the data in order to assess the students' reading achievment before and after using the reading comprehension exerciser. The results were 1) The developed reading comprehension exercises based on English newspapers and magazines using task-based approach were efficient at 75.07/78.22 meeting the set criterion of 75/75.2) The students' achievement scores were singificantly higher at .05 level.