Based　on　the　indoor　model　pull-out　tests　on　the　branch-type　anchor,　the　variation　characteristics　of　the　load-displacement　curve　and　the　axial　force　transmission　characteristics　are　studied.　Then,　the　mechanical　model　for　the　anchor　is　discussed,　and　the　theoretical　formula　for　the　end　resistance　of　disc　is　derived.　Combined　with　the　hyperbolic　nonlinear　model　for　the　anchor-soil　interface,　the　load　transfer　model　is　established　by　using　the　sectional　deformation　coordinated　iterative　algorithm.　Finally,　the　sensitivity　analysis　of　the　parameters　such　as　the　ultimate　pressure　of　cavity　expansion　distribution　and　the　squeezing　angle　of　the　branch　disc　is　performed.　The　results　show　that　the　load　displacement　curve　can　be　divided　into　three　stages.　The　axial　force　distribution　decreases　along　the　anchor　depth　and　the　step　mutation　occurs　at　the　branch　disc,　and　the　load　ratio　also　increases　continuously.　The　calculated　results　are　basically　consistent　with　the　indoor　measured　data,　which　verifies　the　validity　of　the　model.　The　ultimate　pressure　of　cavity　expansion　increases　rapidly　and　nonlinearly　along　the　radial　direction　of　the　branch　disc　and　then　decreases　slowly.　The　peak　value　increases　with　the　displacement　and　moves　radially　outward　with　the　center　of　the　branch　disc　as　the　circular　point.　The　overall　distribution　changes　from　＇cone　platform＇　to　＇cylinder＇.　When　the　squeezing　angle　is　greater　than　50°,　the　ultimate　drawing　force　significantly　increases.　The　research　results　are　of　important　theoretical　and　practical　significance　for　the　analysis　and　design　of　the　force　of　the　branch-type　anchor.　©　2021,　Editorial　Office　of　Chinese　Journal　of　Geotechnical　Engineering.　All　right　reserved.