Nations along “the Belt and Road” are important provision production areas. Effective use of virtualized water trading strategy helps mitigate the provision dilemma and realize the efficient allocation of water resource. This paper, based on production and climate data 2010 to 2016, estimates their unit virtualized water content of seven provisions in 65 nations along “the Belt and Road”, and sets up a virtualized water trading network model based on provision and trading data, which show a feature of small world of anti-globalization. Russia and Ukraine are net provision-virtualized water exporters, while Egypt and Iran are net importers. China remains the balance with expanding provision-virtualized water trading size, playing a role of bridge in the network. This paper presents a virtualized basis for improving their agricultural production and trading structure and utilizing water resource in the nations along “the Belt and Road”.