The Welsh government is to invest £1.7m into the project although it cannot give any indication about when the online service might be accessible.
Bilingual My Health Online will include advice and information to help patients manage health conditions and will link to the existing NHS Direct Wales website.
Health minister Edwina Hart said: ‘My Health Online will particularly save lengthy journeys to GP practices. The website will also help empower people to take responsibility for their own health through the completion of a health diary which can be shared with their GP.'
Dr Richard Lewis, Welsh secretary of the BMA, said: 'Any development that improves efficiency and gives better access to information will be welcomed by doctors. But we must ensure that these systems are secure and retain the confidence of the public.'