A quantitative method for the security access strategy selection of the edge computing terminals includes the following steps: S1. Quantifying and ranking the security risks according to the terminals and data application requirements under the edge computing system. S1. Quantifying and ranking the security risks according to the terminals and data application requirements under the edge computing system. S2. Calculating the security quantification value of terminal and data application. S3. Giving the weight coefficients for the security risk protection of the security access strategies for the terminal and data in the edge computing side. S4. Give the corresponding value of each security strategy to the corresponding terminal and data security protection. S5. Select the corresponding algorithm according to the data set in S4 to select the security strategies.