This　study　aimed　to　identify　individual　differences　in　adolescents＇　electronic　device　usage　patterns　and　explore　their　unique　associations　with　sleep　disturbances.　From　May　to　June　2019,　students　from　18　middle　schools　in　Fuzhou　were　invited　to　fill　out　questionnaires　about　sleep　health　and　electronic　device　usage,　including　screen　time,　usage　timing,　usage　purpose,　pre-sleep　usage,　and　the　presence　of　devices　in　bedrooms.　Latent　class　analysis　was　employed　to　identify　distinct　usage　patterns,　and　their　associations　with　sleep　disturbances　were　subsequently　explored.　Four　usage　patterns　were　identified　among　a　total　of　19,229　adolescents:　(1)　＂minor　exposure-learning,＂　(2)　＂weekends　dominance-game　playing,＂　(3)　＂weekends　and　pre-sleep　dominance-learning,＂　and　(4)　＂excessive　exposure-game　playing.＂　Compared　to　Pattern　1,　a　higher　likelihood　of　insufficient　sleep　was　found　during　weekdays　and　weekends　in　Pattern　3　(weekdays-odds　ratio　(OR)　1.15,　95%　confidential　interval　(CI)　1.0-1.28;　weekends-OR　1.19,　95%　CI　1.09-1.30)　and　Pattern　4　(weekdays-OR　=　1.48,　95%　CI　1.31-1.68;　weekends-OR　=　1.40,　95%　CI　1.27-1.53)　but　only　during　weekends　in　Pattern　2　(OR　=　1.18,　95%　CI　1.07-1.30).　Besides,　Patterns　2-4　were　related　to　delayed　bedtime,　insomnia　symptoms,　and　recurrent　sleep　paralysis　or　nightmares.Conclusion:　Four　electronic　device　usage　patterns　were　found　among　adolescents.　Compared　with　the　pattern　of　minimal　screen　exposure　and　a　learning　purpose,　other　patterns　were　more　likely　to　be　associated　with　sleep　disturbances.　These　findings　carry　significant　implications　for　healthy　electronic　device　usage　and　potential　strategies　to　improve　adolescents＇　sleep　health.　What　is　Known:center　dot　As　screen　use　among　adolescents　increases,　promoting　healthy　digital　habits　is　crucial　for　reducing　sleep　disruptions　and　enhancing　well　-　being.center　dot　Existing　recommendations　on　adolescents＇　electronic　device　use　mainly　focus　on　usage　duration　and　lack　systematic　advice.What　is　New:center　dot　Latent　class　analysis　(LCA)　identified　four　electronic　device　usage　patterns　among　Chinese　adolescents,　based　on　screen　time,　usage　timing,　purpose,　pre-sleep　usage,　and　device　presence　in　bedrooms.center　dot　Reducing　usage,　especially　pre-bedtime,　using　devices　for　education,　and　keeping　them　out　of　the　bedroom　were　less　linked　to　sleep　issues.