The global economy is still in a deep adjustment period with weak demand and economic growth，and the rise of trade protectionism has increased the uncertainties in regional economic and trade cooperation. In recent years，the Chinese government has committed to building up a high-level openness to the outside world and strengthening the trade and economic cooperation with countries along the Belt and Road. In view of this，the identification of laws and regulations and risk aversion in the investment field is of great importance. The Portuguese-speaking countries are a crucial destination for China to go abroad in the investment and trade cooperation. First of all，it is necessary to correctly understand，analyze，sort out and evaluate the domestic investment environment and related laws and regulations of the Portuguese-speaking countries based on host country’s domestic investment legislations，so as to avoid risks in advance. Secondly，it is required to review the legal risks existing in the bilateral investment protection agreements of China and the Portuguese-speaking countries. Finally，the investment dispute settlement mechanism is one of the core links in investment risk remedy. Hence，commercial arbitration rules should be incorporated into the investment dispute settlement system to provide more dispute settlement options to investors. It is of great necessity to form a systemic risk prevention mechanism that combines the mechanisms of three stages，the before and during the prevention，as well as afterward risk remedy.