This　article　focuses　on　the　analysis　of　the　influence　of　different　peak　values　and　static　water　pressure　on　the　electron　density　of　water　discharge　plasma.　A　2D　axisymmetric　model　of　pulsed　discharge　in　water　is　established　using　COMSOL　finite　element　software.　The　numerical　values　of　the　electron　density　of　the　plasma　during　the　pulsed　discharge　process　in　water　are　obtained　by　solving　the　fluid　diffusion　equations　coupled　with　the　Poisson　equation　for　spatial　electric　fields.　Simulation　results　show　that　increasing　the　peak　value　will　increase　the　electron　density　of　the　water　discharge　plasma.　In　a　discharge　environment　with　a　static　water　pressure　of　0.1　MPa,　when　the　applied　peak　value　is　10　kV,　the　peak　electron　density　is　2.31　×　1023　m-3.　As　the　applied　peak　value　gradually　increases　to　15　kV,　the　peak　electron　density　reaches　8.91　×　1023　m-3,　and　the　peak　appears　earlier.　On　the　other　hand,　increasing　the　static　water　pressure　will　suppress　the　discharge　process　and　reduce　the　peak　electron　density　of　the　water　discharge　plasma.　In　a　discharge　environment　with　a　static　water　pressure　of　0.5　MPa,　when　the　applied　peak　value　is　10　kV,　the　peak　electron　density　is　only　0.38　×　1023　m-3.　It　is　also　observed　that　the　ability　of　static　water　pressure　to　suppress　the　peak　electron　density　of　water　discharge　plasma　is　higher　at　lower　peak　values　and　lower　at　higher　peak　values.　For　example,　in　a　discharge　environment　with　an　applied　peak　value　of　10　kV　and　a　static　water　pressure　of　0.5　MPa,　the　reduction　in　peak　electron　density　is　83.55%　compared　to　the　same　voltage　level　discharge　environment　at　0.1　MPa.　However,　when　the　applied　peak　value　is　15　kV　and　the　static　water　pressure　is　0.5　MPa,　the　reduction　in　peak　electron　density　is　only　56.57%　compared　to　the　same　voltage　level　discharge　environment　at　0.1　MPa.　IEEE