Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
REVENUE	$ 133,421	$ 203,231	$ 398,969	$ 562,104
COST OF REVENUES	(121,499)	(140,746)	(345,518)	(483,027)
GROSS PROFIT	11,922	62,485	53,451	79,077
OPERATING EXPENSES
General and administrative	(81,664)	274,256	(286,030)	(198,312)
Total operating expenses	(81,664)	274,256	(286,030)	(198,312)
(LOSS) INCOME FROM OPERATIONS	(69,742)	336,741	(232,579)	(119,235)
Other (expense) income:
Gain from the sale of subsidiaries	0	559,299	0	559,299
Interest income	0	0	1	4
Interest expense	(563)	(575)	(1,688)	(1,688)
Sundry income	0	(100)	0	0
Total other income (expense)	(563)	558,624	(1,687)	557,615
(LOSS) INCOME BEFORE INCOME TAXES	(70,305)	895,365	(234,266)	438,380
Income tax expense	(243)	(890)	(243)	(890)
(Loss) income from continuing operation	(70,548)	894,475	(234,509)	437,490
Loss from discontinued operations, net of tax	0	(440,096)	0	(440,096)
NET (LOSS) INCOME	(70,548)	454,379	(234,509)	(2,606)
Less: loss attributable to noncontrolling interest	(22)	0	(22)	0
Net (loss) income attributable to Cosmos Group Holding Inc.	$ (70,526)	$ 454,379	$ (234,487)	$ (2,606)
Net (loss) income per share - Basic and diluted	$ (0.00)	$ 0.02	$ (0.01)	$ (0.02)
Weighted average common shares outstanding - Basic and diluted	26,492,993	21,492,933	23,165,747	21,492,933
NET (LOSS) INCOME	$ (70,548)	$ 454,379	$ (234,509)	$ (2,606)
Other comprehensive income:
- Foreign currency translation income (loss)	0	(1,986)	0	5,294
COMPREHENSIVE (LOSS) INCOME	$ (70,548)	$ 452,393	$ (234,509)	$ 2,688