Cover - shares	12 Months Ended
	Sep. 30, 2024	Dec. 30, 2024
Document Information [Line Items]
Document Type	20-F
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Financial Statement Error Correction [Flag]	false
Document Shell Company Report	false
Entity Interactive Data Current	Yes
Document Accounting Standard	U.S. GAAP
ICFR Auditor Attestation Flag	false
Amendment Flag	false
Document Period End Date	Sep. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Information [Line Items]
Entity Registrant Name	GLOBAL MOFY AI LIMITED
Entity Central Index Key	0001913749
Entity File Number	001-41834
Entity Incorporation, State or Country Code	E9
Current Fiscal Year End Date	--09-30
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Incorporation, Date of Incorporation	Sep. 29, 2021
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	No. 102, 1st Floor
Entity Address, Address Line Two	No. A12, Xidian Memory Cultural and Creative TownGaobeidian Township
Entity Address, Address Line Three	Chaoyang District
Entity Address, City or Town	Beijing
Entity Address, Country	CN
Entity Address, Postal Zip Code	100000
Entity Listings [Line Items]
Title of 12(b) Security	Class A Ordinary Shares, par value $0.00003 per share
Trading Symbol	GMM
Security Exchange Name	NASDAQ
Class A Ordinary Shares
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		2,083,031
Class B Ordinary Shares
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		848,203
Business Contact [Member]
Entity Contact Personnel [Line Items]
Contact Personnel Name	Haogang Yang
Contact Personnel Email Address	ir@mof-vfx.com
Entity Address, Address Line One	No. 102, 1st Floor
Entity Address, Address Line Two	No. A12, Xidian Memory Cultural and Creative TownGaobeidian Township
Entity Address, Address Line Three	Chaoyang District
Entity Address, City or Town	Beijing
Entity Address, Country	CN
Entity Address, Postal Zip Code	100000
Entity Phone Fax Numbers [Line Items]
City Area Code	+86
Local Phone Number	10-64376636