In　order　to　make　up　hybrid　FRP　composites　with　excellent　comprehensive　properties,　the　uniaxial　tensile　properties　of　hybrid　composites　between　aramid　fiber,　basalt　fiber,　glass　fiber　and　carbon　fiber　were　researched　experimentally,　and　seven　RC　beams　were　strengthened　with　hybrid　FRP　sheets.　The　results　show　that　the　hybrid　FRP　composites　occurs　good　hybrid　effect,　and　hybrid　effect　of　CFRP/AFRP/GFRP　laminated　hybrid　composites　is　optimum,　its　hybrid　effect　coefficients　is　0.453,　and　the　displacement　ductility　index　for　its　strengthening　RC　beam　is　larger　20%　than　that　of　single　CFRP　sheets　strengthening　RC　beam.　Which　indicate　the　hybrid　idea　of　CFRP/AFRP/GFRP　can　solve　the　stress　transfer　question　for　hybrid　composites　between　carbon　fiber　and　glass　fiber,　and　further　improve　the　ductility　of　hybrid　FRP　composites.　Based　on　the　experimental　study,　an　elastoplastic　section　analysis　method　is　conducted　to　predict　the　bearing　capacity　of　RC　beams　strengthened　with　hybrid　FRP　sheets,　the　results　from　the　theoretical　predictions　and　the　experiment　agree　well.