A blind hole insert fixing device is configured for fixing a number of blind hole inserts. The blind hole insert fixing device includes a hollow housing defining a cavity and an engagement member received in the cavity. The housing includes a first inner surface and an opposing second inner surface in the cavity. The engagement member includes a body portion, a number of spring portions, and a number of engagement portions conforming to the blind hole inserts. The spring portions and the engagement portions are located at opposite sides of the body portion. The spring portions abut against the first inner surface. The engagement portions and the second inner surface cooperatively form a number of receiving spaces for receiving the blind hole inserts. The spring portions are configured for applying a force to the body portion in a direction away from the first inner surface.