In this paper, Methacrylic acid(MAA), 2-Acrylamido-2- Methyl Propanesulfonic Acid(AMPS), polyvinyl alcohol (PVA) as monomer and Sodium Borate as crosslinking agent, semi-interpenetrating (semi-IPN) hydrogels P(MAA/PAMPS)-PVA/ was prepared. The surface morphology and chemical state of hydrogels were characterized by scanning electron microscope (SEM), fourier transform infrared spectrum (FT-IR), gel permeation chromatography(GPC), thermogravimetric analysis (DSC-TG) and rheometer; The swelling behavior, pH-sensitive, self-healing were investigated. The test results showed that the hydrogels formed a stable IPN interpenetrating network structure and exhibited pH sensitivity, self-healing. Borate ester bond formed by PVA hydroxyl group and borate ion determines self-healing which is controlled by pH of the medium. The mechanical experiment indicated that the tensile strength of the self-healing hydrogel was 668 kPa, the elongation at break was 665%, and the self-healing efficiency was 81%.