Computer-assisted language learning (CALL), British, or Computer-Aided Instruction (CAI)/Computer-Aided Language Instruction (CALI), American, is briefly defined in a seminal work by Levy (1997: p. 1) as "the search for and study of applications of the computer in language teaching and learning". Analysis of Advantages and Disadvantages of Computer-assisted Instruction in English Teaching Zhang Ya-nan School of Foreign Languages, Nanyang Institute of Technology Nanyang, China, 473004 knightv97@sohu.com Abstract—With the development of science and technology, especially since the application of computer technology, Computer assisted learning (CAL), as the name implies, is the use of electronic devices/computers to provide educational instruction and to learn. Computer assisted learning can be used in virtually all fields of education, ranging from TV/DVD play-learn program for kindergarten kids to teaching quadruple bypass surgery techniques in medicine. The paper, first, describes the different stages of development of computer assisted language teaching along the time, and then examines the advantages and disadvantages of computer usage in both foreign language teaching and learning. Computer-Aided Instruction (CAI), diverse and rapidly expanding spectrum of computer technologies that assist the teaching and learning process. CAI is also known as computer-assisted instruction. Examples of CAI applications include guided drill and practice exercises, computer visualization of complex objects, and computer-facilitated Computer-assisted instruction (CAI) is a narrower term and most often refers to drill-and-practice, tutorial, or simulation activities offered either by themselves or as supplements to traditional, teacherdirected instruction. Computer-managed instruction (CMI) can refer either to the use of computers by school Young children who are English language learners (ELLs) face major challenges in learning to read English. This study examined wh