The event forms part of activities to celebrate the International Day of Happiness (March 20).
The delegation includes 21 volunteers and most of them are Australian citizens.
The guests visited clubs in Hoa Phong and Hoa Khuong communes, which were established to carry out the project.
The clubs, each with about 30 male members, organise monthly activities with different themes, providing necessary skills and knowledge about prevention of violence against women and children.
Philip Pruecell, head of the UN Women National Committee in Australia, said violence against women and girl is a global issue, which still exists in a developed country like Australia.
The prevention of violence against women and girls is not the individual task, but of all countries around the world, he added.