The move comes after an independent review assessed ways in which the Welsh Church can attract new members.
In the current structure, a single ordained priest leads a small parish, but under the planned changes parishes will be scrapped for "Ministry Areas", and instead of one ordained priest leading it, a group of both ordained priests and those who are not ordained (laity) will take charge.
The Archbishop of Wales, Dr Barry Morgan, said at a recent conference outlining the changes: ""This conference is about the need for us, as a church, to relate more effectively to the people and communities of Wales as we approach the centenary of our disestablishment.
"We have been required to revisit long-held understandings of how we provide ministry, by and to whom, and how we relate to our communities.
"It is not about doing more with less but more about a cultural change in the kind of church we are - realising that the mission and ministry of Jesus has been entrusted to the church as a whole, not just to bishops and clergy.
The Church in Wales celebrates its centenary in 2020, and it's change in structure is a key part of its plans for growth until then.
It calls this plan 2020 Vision.
Ministry Area leaders are already being trained to implement their 2020 Vision.