The invention belongs to the technical field of medicinal solid oral-taking preparation, relates to a cetirizine hydrochloride tablet and a preparation method thereof. The cetirizine hydrochloride tablet is prepared from the following raw materials and auxiliary materials of cetirizine hydrochloride, a filling agent, a flow aid, a bonding agent, a plasticizer, an opaquer, wherein the filling agentis prepared from microcrystalline cellulose and lactose; the flow aid is prepared from one or two of silicon dioxide, talcum powder and colloidal silicon dioxide; the lubricating agent is magnesium stearate; the bonding agent is prepared from one or two of hydroxypropyl methylcellulose, starch, dextrin or polyvinyl alcohol; the plasticizer is polyethylene glycol-400; and the opaquer is titanium dioxide. The product has high stability, can keep stable at high temperature and in a high-temperature environment; the product has high stability, can be stored for a longer time under the normal storage conditions, the shelf life of the product is prolonged, the product can be dissolved rapidly, bioavailability is high, as provided by external quality research, the product conforms to the regulation and standard, clinical bioequivalence can meet the requirement of the regulation. The invention further provides a preparation method, and the production prescription process is easy.