Cover - shares	3 Months Ended
	Mar. 31, 2023	Jul. 15, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2023
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2023
Current Fiscal Year End Date	--12-31
Entity File Number	333-198772
Entity Registrant Name	Alpha Investment Inc.
Entity Central Index Key	0001616736
Entity Tax Identification Number	90-0998139
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	200 East Campus View Blvd.
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Columbus
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43235
City Area Code	305
Local Phone Number	704-3294
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 Common Stock, Shares Outstanding		11,224,401