Note 1 - Organization and Nature of Operations - Consolidated Subsidiaries and VIEs (Details)	Dec. 31, 2022
ChinaNet BVI [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
China Net HK [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
ChinaNet Investment BVI [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
Grandon BVI [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
Winner Glory HK [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
Rise King WFOE [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
ChinaNet Online Holdings Co. [Member]
Consolidated subsidiaries, percentage of ownership	100.00%
ChinaNet Online Guangdong [Member]
Consolidated subsidiaries, percentage of ownership	100.00%