An electrical wall socket mounted aroma diffuser with a carrier loaded aromatic bottle is disclosed. The carrier of the carrier loaded aromatic bottle uses capillary pores to absorb the aromatic fluid so that the aromatic fluid will not flow out of the aroma diffuser even if the aroma diffuser dumps. When the aromatic fluid is used up, a new aromatic fluid can be easily and quickly added to the carrier for application. Therefore, the electrical wall socket mounted aroma diffuser of the invention is safe to use. The carrier can be used repeatedly with a new supply of aromatic fluid. It does not need to clean the part of the aroma diffuser that accommodates the aromatic fluid. The user can detach the carrier loaded aromatic bottle from the bottle holder for the replacement of another carrier loaded aromatic bottle that is filled up with a different smell of aromatic fluid.