PURPOSE: A composition for diagnosing and treating cancer using an antibody which is specific to a certain site of cancer-related proteins is provided to be used in an agent for diagnosing and treating cancer.CONSTITUTION: A composition for diagnosing cancer contains an antibody which binds with a peptide selected from sequence numbers 1-15. The cancer includes lung cancer, breast cancer, liver cancer, cervical cancer, skin cancer, colon cancer, kidney cancer, prostate cancer, or pancreatic cancer. A pharmaceutical composition for preventing or treating cancer contains the peptide-binding antibody and pharmaceutically acceptable carriers. A kit for diagnosing cancer contains the peptide-binding antibody. A method for providing information for diagnosing cancer comprises: a step of providing a biological sample to be analyzed a step of contacting the sample with an antibody a step of quantitatively detecting an antigen-antibody complex and a step of comparing the detection result with a control group.COPYRIGHT KIPO 2013본 발명은 암 진단 및 치료용 조성물 및 방법에 관한 것으로 더욱 상세하게는 세포 막에 존재하는 인간 암관련 단백질의 특정 부위에 특이적인 항체를 이용한 암 진단 및 치료용 조성물 및 그 방법에 관한 것이다.