A structure presenting relevant constructs of vulnerability for developing but notleast-developed countries in the global trade regime shift was first proposed. Based on the structure, the vulnerability constructs were empirically summarized as three independent factors: economic scale, volatility degree, and development level. A map, showing the overall vulnerability positioning of the countries, with dimensions of 'economic scale' and 'volatility with resilience of development', was further created. The map reveals that most small-population states are more vulnerable. Nevertheless, some large economies may not be less vulnerable and should not be excluded if special treatments are offered to non-least-developed small states.