Many people think that science and math are much closed with each other. Although students learn math and science separately, they have to integrate these two disciplines together in their learning and in solving daily life problem. Many science and math educators have aware the importance of the integration in science and math. Thus the purpose of the paper is to address the importance of math and science integration. Several themes are addressed in the paper, which included with 1) The theoretical aspect for integration of science and math: continuum and sake styles. 2) The integration of science and math from literacy point of view, such as listening, writing, reading, and speaking. 3) The integration of science and math from mathematical language viewpoint. Mathematical language consisted of ”Contextual Language”, ”Bridging Language”, and ”Official Mathematical Language”, these all contextual bound. 4) The integration of science and math from curriculum standard point of view. Finally the paper recommends science and math teachers are awarded of integrating science and math in their classroom teaching.