Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 23, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2021
Current Fiscal Year End Date	--12-31
Entity File Number	000-54530
Entity Registrant Name	GBT TECHNOLOGIES INC.
Entity Central Index Key	0001471781
Entity Tax Identification Number	27-0603137
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	2450 Colorado Ave.
Entity Address, Address Line Two	Suite 100E
Entity Address, City or Town	Santa Monica
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90404
City Area Code	888
Local Phone Number	685-7336
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 7,045,784
Entity Common Stock, Shares Outstanding		33,663,501
Auditor Name	BF Borgers CPA PC
Auditor Location	CO
Auditor Firm ID	5041