A float-type connecting module and a float-type docking device having the module. The float-type docking device includes a float-type connecting module and a pluggable device including at least one dock connector. The float-type connecting module includes a position limiting structure, at least one flexible circuit board and at least one connector. The position limiting structure is provided at the hard circuit board. The connector is for electrically connecting to the dock connector, is electrically connected to the hard circuit board through the flexible circuit board, and floats in the position limiting structure. Thus, the issues of precise alignment required between a slot of a housing and a port of the connector and precise alignment respectively required between connectors and dock connectors are resolved.