Objective To explore whether patients with white matter hyperintensity （WMH） have characteristic dyskinesia through simple digital writing and painting tasks. Methods A total of 82 WMH patients hospitalized in the Department of Neurology of the Seventh Medical Center of PLA General Hospital from April 2020 to April 2021 were enrolled. All patients were divided into low load group （n=42）， medium load group （n=20） and high load group （n=20） according to the scores of Fazekas. WACOM touch screen and electronic pen were used for writing and painting test， and MovAlyzeR software was used to record and process kinematic parameters. The speed， pressure and average tortuosity of the three groups were compared； The pressure and speed of the third and fourth strokes of the Chinese character " 正 "； Write the vertical and horizontal size of the Chinese character " 永 "； The average normalized jerk （ANJ） and sub motion sum when painting Archimedes spiral， and analyze the differences between WMH and writing and painting parameters. Spearman correlation was used to analyze the correlation between WMH degree and writing and painting parameters. Results There were significant differences in the average tortuosity of signature， the speed of signature and the speed of writing the fourth stroke of " 正 " in low load， medium load and high load groups ［0.2 （0.1， 0.4） vs 0.3 （0.2， 0.4） vs 0.4 （0.2， 0.6）； 1.6 （1.4，2.3） cm/s vs 1.5 （1.2， 2.0） cm/s vs 1.2 （1.1， 1.6） cm/s； 1.4 （1.2，1.8）cm/s vs 1.3 （0.9， 1.7）cm/s vs 0.9 （0.8， 1.4）cm/s］ （Z=9.571， 10.726， 12.478； P＜ 0.01）. The difference of vertical size of " 永 " among the three groups ［（1 611.3±405.0）cm vs （1 474.1±512.8）cm vs （1 286.8±470.1）cm］ were statistically significant （F=3.580，P＜ 0.05）. The difference of ANJ and sub motion sum when painting Archimedes spiral among the three groups ［30.9 （22.2， 51.3） vs 44.6 （23.2， 80.8） vs 52.8 （31.2， 100.8）； 8.0 （2.5， 11.5） vs 11.0 （5.0， 17.0） vs 12.0 （9.3， 15.8）］ were statistically significant （Z=7.636， 7.792； P ＜ 0.05）. The correlation analysis showed that the degree of WMH was positively correlated with the average tortuosity of signature， spiral ANJ， spiral sub motion （r=0.366， 0.301，0.300；P＜ 0.01）， and negatively correlated with the speed of signature， the speed of writing the fourth stroke of " 正 " character and the vertical size of " 永 " character （r= -0.307，-0.307，-0.287；P＜ 0.01）. Conclusions With the increasing severity of WNH， writing and painting deteriorated significantly， and writing disorders mainly exist in the vertical direction.