The product is a kind of organic complex synthesized by boric acid or boric acid esters, organic ligands and chelating agent. The product can crosslink with various domestic plant gum based thickeners, such as guar gum, hydroxypropyl guar gum, sesbania gum, and fenugreek gum. The crosslinked gel fracturing fluids have good viscoelasticity and the resistance to temperature is up to 160 °C.