The invention relates to the field of assembling type concrete square pile construction, in particular to a precise pile splicing platform used for assembling type precast square piles. The platform comprises two walking rail foundations symmetrically arranged on two sides of all hole piles of a composite retaining structure, walking rails mounted on the two walking rail foundations in the extension direction of the walking rail foundations, at least four pile splicing platform rollers in rolling fit with the walking rails, and a lower platform mounted on the all pile splicing platform rollersin a supported manner. The problem that in the novel assembling type concrete square pile construction process, the precast square piles are low in pile splicing efficiency and poor in precision is solved, the precise pile splicing platform used for the assembling type precast square piles enable the assembling type precast square piles to be efficiently and precisely in abut joint, constructionefficiency is high, positioning precision of sinking of the precast square piles and the later-period building envelope waterproof effect can be effectively ensured, secondary rework is reduced, and the economic benefits are obvious.