The purpose of this study was to deeply understand older adults’ acceptance of socially assistive robots and their influencing factors and to compare the strength of the correlation between each influencing factor variable and the acceptance. The literature search was performed in five databases from their inception to January 17, 2023. The meta-analysis was performed using Review Manager 5.4 and Stata 16.0 software. Thirteen papers were included in this study. The mean value of acceptability after using the inverse variance method was 3.68. Education level is strongly related to technology acceptance; perceived ease of use, perceived usefulness, technology experience, technology attitude, perceived hedonism, and convenience are moderately related; anxiety is only weakly related.