Cover	12 Months Ended
Cover	Dec. 31, 2025 USD ($) shares
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	001-42273
Entity Registrant Name	WINTERGREEN ACQUISITION CORP.
Entity Central Index Key	0002053927
Entity Tax Identification Number	00-0000000
Entity Incorporation, State or Country Code	E9
Entity Address, Address Line One	Room 8326, Block B
Entity Address, Address Line Two	Hongxiang Cultural and Creative Industrial Park
Entity Address, Address Line Three	90 Jiukeshu West Road
Entity Address, City or Town	Tongzhou District, Beijing
Entity Address, Country	CN
Entity Address, Postal Zip Code	00000
City Area Code	86
Local Phone Number	136 5237 1477
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	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	true
Entity Public Float \| $	$ 57,013,050
Entity Common Stock, Shares Outstanding \| shares	7,303,575
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Auditor Name	ZH CPA, LLC
Auditor Location	Denver, Colorado
Auditor Firm ID	6413
Units, each consisting of one ordinary share and one right to acquire 1/8
Title of 12(b) Security	Units, each consisting of one ordinary share and one right to acquire 1/8
Trading Symbol	WTGUU
Security Exchange Name	NASDAQ
Ordinary Shares included as part of the Units
Title of 12(b) Security	Ordinary Shares included as part of the Units
Trading Symbol	WTG
Security Exchange Name	NASDAQ
Rights included as part of the Units
Title of 12(b) Security	Rights included as part of the Units
Trading Symbol	WTGUR
Security Exchange Name	NASDAQ

Wintergreen Acquisition Corp. 10-K