中文：

投资风险评估是指在投资过程中，对投资项目的风险进行评估和预测，以便投资者做出明智的决策。投资风险评估可以帮助投资者了解投资项目的潜在风险和回报，并确定最合适的投资策略。

投资风险评估的方法包括定量分析和定性分析。定量分析主要是通过数据和模型来评估投资风险，例如使用统计方法或金融模型来预测投资收益和风险。而定性分析则主要是通过分析和研究投资项目的背景、行业趋势、公司财务状况等各方面因素来评估投资风险。

在进行投资风险评估时，需要考虑多种因素，例如市场风险、信用风险、操作风险、流动性风险等。市场风险是指由于市场价格波动而导致投资损失的风险。信用风险是指由于借款人或债券发行人违约而导致的损失。操作风险是指由于内部流程或系统故障而导致的损失。流动性风险是指由于市场缺乏流动性或投资者无法在需要时以期望价格出售投资而导致的损失。

英文：

Investment risk assessment refers to the evaluation and prediction of the risks of an investment project in the investment process to enable investors to make informed decisions. Investment risk assessment can help investors understand the potential risks and returns of the investment project and determine the most appropriate investment strategy.

The methods of investment risk assessment include quantitative analysis and qualitative analysis. Quantitative analysis mainly evaluates investment risks through data and models, such as using statistical methods or financial models to predict investment returns and risks. Qualitative analysis mainly evaluates investment risks by analyzing and studying various factors such as the background of the investment project, industry trends, and the financial condition of the company.

When conducting investment risk assessment, it is necessary to consider various factors, such as market risk, credit risk, operational risk, and liquidity risk. Market risk refers to the risk of investment loss caused by market price fluctuations. Credit risk refers to the loss caused by borrower or bond issuer default. Operational risk refers to the loss caused by internal processes or system failures. Liquidity risk refers to the loss caused by a lack of market liquidity or investors' inability to sell investments at desired prices when needed.