The present invention provides a preparation method of a tyrosine enzyme inhibitor Foretinib. The method is as below: subjecting 1,1-cyclopropyl dicarboxylic acid diethyl ester to selective hydrolysis; amidating with p-fluoro aniline to obtain a compound shown in a formula 4; hydrolyzing and amidating with 4-amino-2-fluorophenol to obtain a compound shown in a formula 6; conducting substitution on 4-chloro-6-methoxy-7-quinolinol and N-(3-chloropropyl) morpholine to obtain a compound shown in formula 8; conducting substitution on the compound in formula 6 and compound shown in the formula 8 to obtain a target product N-[3-fluoro-4-({6-(methyl oxy)-7-[(3-morpholine-4-yl phenyl)-oxy] quinoline-4-yl}oxy)phenyl]-N'-(4-fluorophenyl) cyclopropane-1,1-dicarboamide crude product. The crude product is re-crystallized in an ethanol / acetone solution to obtain a high purity product with an overall yield of 44-55%. The method has the advantages of easy and feasible process, easily available raw materials, high overall yield and good product quality, and is applicable to industrial production.