Vortex　beams　carrying　orbital　angular　momentum　have　important　applications　in　high　dimensional　optical　information　processing,　manipulations　of　tiny　particles,　super-resolution　imaging　and　so　on.　Among　various　optical　components,　metasurface　represents　an　ideal　platform　for　realizing　vortex　beams　with　multiple　optical　functionalities　due　to　its　strong　ability　in　manipulating　the　phase,　polarization　and　amplitude　of　light.　A　metasurface　combing　the　functions　of　a　lens　and　a　vortex　beam　generator　can　greatly　shrink　the　size　of　many　optical　systems.　Here,　we　alternatively　propose　a　new　metasurface　design　based　on　the　concept　of　a　Fresnel　zone　plate　to　generate,　focus　the　vortex　beams,　and　perform　on-axis　interference　between　different　vortex　beams.　These　functions　are　experimentally　demonstrated　through　encoding　the　spiral　phase　profiles　into　the　odd　and　even　zones　of　a　dielectric　metasurface.　The　proposed　vortex　beam　generation　strategy　employs　the　advantages　of　both　the　Fresnel　zone　plate　and　the　metasurface,　and　may　open　new　routes　for　high-dimensional　optical　information　processing.