This　paper　is　to　introduce　a　type　of　cascadic　multigrid　method　for　coupled　semilinear　elliptic　equations.　Instead　of　solving　the　coupled　semilinear　elliptic　equation　on　a　very　fine　finite　element　space　directly,　the　new　scheme　needs　to　solve　a　decoupled　linear　system　by　some　smoothing　steps　on　each　of　multilevel　finite　element　spaces　and　solve　a　coupled　semilinear　elliptic　equation　on　a　coarse　space.　By　choosing　the　appropriate　number　of　smoothing　steps　on　different　finite　element　spaces,　the　corresponding　optimal　convergence　rate　and　optimal　computation　work　can　be　derived.　Besides,　the　adaptive　cascadic　multigrid　method　for　coupled　semilinear　elliptic　equations　and　its　analysis　are　also　presented　theoretically　and　numerically.　Moreover,　the　requirement　of　bounded　second　order　derivatives　of　the　nonlinear　term　in　the　existing　multigrid　methods　is　reduced　to　the　Lipschitz　continuation　property　in　the　presented　new　scheme.　Some　numerical　experiments　are　presented　to　validate　our　theoretical　analysis.