We developed a Web application system for children with pronunciation difficulties to practice pronunciation. The system users are assigned one of the following authorizations: student, teacher, medical worker, or speech evaluator. The teachers, medical workers, and speech evaluators are grouped by the student to whom they are linked and can access exercise records and student speech sounds by the Internet. The teachers can individually tailor practice words to each child's pronunciation needs. The medical workers and speech evaluators confirm the accuracy of the student's pronunciation and can share information with teachers. Thus, our system will encourage students to practice their pronunciation and promote the cooperation of teachers and medical workers for more effective instruction.