Objective To investigate the intervention effect of counting gratitude strategy on subjective well-being in migrant children.Methods A total of 234 migrant children from a vocational high school in Guangzhou Province were selected via convenience sampling method and equally divided into experimental group and control group（n=117）in accordance with the baseline assessment result.The counting gratitude strategy was applied in the experimental group for 4 weeks

while was not applied in the control group.The gratitude scale and subjective well-being scale was used in two groups both before and after the intervention

and all results were compared and analyzed.Results Pre-intervention scores of gratitude scale and subjective well-being scale in two groups had no statistically significant difference（P >0.05）.Post-intervention scores of those two scales in the experimental group were（4.99±0.98）and（76.71±10.56）

respectively

which were higher than pre-intervention scores of（4.57±1.08）and（72.85±11.10）

and the difference had statistical significance（P<0.05）;scores of those two scales in the control group were（4.61±1.09）and（72.85±10.71）

respectively

and the difference compared with pre-intervention scores of（4.54±1.03）and（73.01±13.25）had no statistical significance（P>0.05）.Additionally

scores of two scales in the experimental group were higher than those in the control group

with statistically significant difference（P<0.05）.Scores of two scales after intervention in different gender had no statistically significant difference（P>0.05）.Conclusion The counting gratitude strategy can improve migrant children′s grateful disposition and subjective well-being.In addition

this strategy can be operated easily and used widely in schools′mental health education as well as social institutes′counseling.