The invention relates to the field of rock-soil layer reinforcing, in particular to a floral tube grouting assembly and a floral tube grouting construction method. The floral tube grouting construction method comprises the steps that a pile hole is formed in a rock-soil layer in advance, the floral tube grouting assembly is placed into the pile hole, the rock-soil layer is grouted in the directionfrom the hole bottom to a hole opening, the floral tube grouting assembly comprises a sleeve, a floral tube, a grouting tube and a fiber rod which are sequentially connected in a sleeving mode, a plurality of through holes for allowing grout to pass are formed in the tube wall of the floral tube, a fixing part is arranged inside the end, penetrating into the rock-soil layer, of the floral tube, the grouting tube can penetrate into the floral tube, a plurality of fiber lines are arranged on the fiber rod, the fiber rod can penetrate through the grouting tube, thus a fixing section and the fixing part of the floral tube are connected, and after grouting, the floral tube and a fiber tube are reserved inside a rock-soil body. According to the floral tube grouting construction method, the bearing capacity of foundation soil can be effectively improved, foundation deformation and non-uniform deformation are reduced, especially, the early-stage strength of a grouting hole can be improved, and it is ensured that a foundation can work safely in a loaded mode after short-period construction.