v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Aug. 17, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2025    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Current Fiscal Year End Date --12-31    
Entity File Number 001-34499    
Entity Registrant Name Gulf Resources Inc.    
Entity Central Index Key 0000885462    
Entity Tax Identification Number 13-3637458    
Entity Incorporation, State or Country Code NV    
Entity Address, Address Line One Level 11    
Entity Address, Address Line Two Vegetable Building    
Entity Address, Address Line Three Industrial Park of the East    
Entity Address, City or Town Shouguang    
Entity Address, State or Province SD    
Entity Address, Country CN    
Entity Address, Postal Zip Code 262700    
Country Region 86    
City Area Code 536    
Local Phone Number 567-0008    
Title of 12(b) Security Common Stock, $0.0005 par value    
Trading Symbol GURE    
Security Exchange Name NASDAQ    
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     $ 6,800,000
Entity Common Stock, Shares Outstanding   1,813,531  
Documents Incorporated by Reference [Text Block] None    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Auditor Name GGF CPA LTD    
Auditor Location Guangzhou, Guangdong, China    
Auditor Firm ID 2729