This study aims to investigate the effects of shared-book reading instruction (SRI) on reading attitude and reading comprehension of the second grade students. Quasi-experimental design was adopted in the study. The participants were 2 classes of second grade students in an elementary school. The experiment lasted 8 weeks including 16 lessons in each class. Research tools include "Reading Attitude Scale" and "Test of Reading Comprehension", the students were tested twice, before and right after the experiment. The major findings of this study were as the following: 1) SRI contributed to elevate the reading attitude of second grade students. 2) SRI contributed to elevate the reading comprehension of second grade students. Based on these findings, suggestions are proposed.