The invention discloses a crosslinking-type low-sensitivity ester-ether copolymerized polycarboxylate superplasticizer and a preparation method thereof. The crosslinking-type low-sensitivity ester-ether copolymerized polycarboxylate superplasticizer has the number-average molecular weight of 10000-100000 and has a structural formula as shown in the specification. Under the synergistic effect of various groups, the polycarboxylate superplasticizer formed by copolymerization of 4-hydroxybutyl-vinyl polyoxyethylene ether, unsaturated acid, unsaturated phosphomonoester and unsaturated phosphodiester has the advantages of high water-reducing rate, high slump loss resistance, high peaceability, mud-resistant property and low dosage sensibility.