Objective: To understand the current situation and association of eHealth literacy with physical health of college students, so as to provide a basis for physical health improvement. Methods: By using stratified random clustering sampling method, a total of 1 446 students from first to third year of college in four colleges and universities in Dongguan were selected for the eHealth literacy questionnaire and physical fitness test. Results: The average eHealth literacy score of college students was(29.72±6.19), with a pass rate of 48.8%. The scores for each dimension were application ability (18.57±4.10), judgment ability (7.48± 1.67 ), and decision making ability (3.67±0.91). The differences in eHealth literacy scores among college students with different birthplaces, family upbringing and frequency of participation in outdoor sports were statistically significant( t/F=-2.44, 3.51, 10.19 , P <0.05). The mean score of physical fitness was (73.20±7.86), with a failure rate of 5.0%, a passing rate of 77.0%, a success rate of 17.1%, and an excellent rate of 0.8%. The differences in scores of physical fitness test varied significantly by gender, grade, and frequency of participation in outdoor sports( Z=-2.27, 8.75, 39.90, P <0.05). Pearson correlation analysis showed that eHealth literacy and the three dimensions of application ability, judgment ability, and decision making ability were positively correlated with total physical fitness test scores( r=0.17, 0.18, 0.16, 0.19, P <0.01). Multiple linear regression analysis showed that after adjusted for gender, grade, and frequency of participation in outdoor sports, eHealth literacy application ability, judgment ability, and decision making ability could significantly and positively affect physical fitness test score( β=0.13, 0.12, 0.12, P < 0.05 ). Conclusion Physical fitness of college students is associated with eHealth literacy,promotion of eHealth literacy among college students help improve physical health status.