There are many temporary factors that will lead to the decrease of the water output of the water purifier (such as abnormal water pressure of the tap water, blockage of the filter element of the water purifier, etc.). Generally, the decrease of the water output occurs. First of all, we need to check whether it is the problem of the water pressure of the tap water; If the water pressure is normal, it means that there are many particles in the water, which makes the filter element of the water purifier blocked. In this way, we need to replace the filter element or contact the service personnel of the water purifier company to take corresponding measures.