The invention discloses tackifying type functional polycarboxylate superplasticizer. A preparation method for the tackifying type functional polycarboxylate superplasticizer comprises the following steps: adding microcrystalline celluloses into unsaturated carboxylic acid and concentrated sulfuric acid to generate acidolysis and esterification reaction; carrying out copolymerization on cellulose nanocrystalline generated by reaction, the esterified derivative of the cellulose nanocrystalline, polyether macromonomers and other micromonomers to form a mico-crosslinking chain structure, i.e., obtain the tackifying type functional polycarboxylate superplasticizer. According to the tackifying type functional polycarboxylate superplasticizer, the microcrystalline celluloses are hydrolyzed to generate the cellulose nanocrystalline to be combined with cellulose nanocrystalline grafted esterification, and the cellulose nanocrystalline which is even in dispersion and the micro-crosslinking polycarboxylate superplasticizer which contains cellulose nanocrystalline derivatives are successfully prepared. After the tackifying type functional polycarboxylate superplasticizer is added into concrete, multiple effects of water reduction, thickening and early strength can be realized.