Statement of Financial Position (USD $)	Mar. 31, 2013	Dec. 31, 2012
Current Assets
Cash	$ 719	$ 718
Prepaid and other receivables	322	321
Total Current Assets	1,041	1,039
Property, plant and equipment, net	2,776	2,945
Total Assets	3,817	3,984
Current Liabilities
Trade accounts payable	765	762
Accrued expenses	40,302	42,924
Deferred income-government grants	119,711	119,256
Due to shareholders	472,693	457,612
Total Current Liabilities	633,471	620,554
Total Liabilities	633,471	620,554
Chang-On International, Inc Stockholders' Equity(Deficit):
Common stock, par value $0.001, authorized 100,000,000 shares, issued and outstanding 97,307,366 shares	97,307	97,307
Additional paid in capital	3,067,959	3,067,959
Deficit	(3,592,755)	(3,582,930)
Accumulated comprehensive income	(34,932)	(33,904)
Total Chang-On International, Inc Stockholders' equity(deficit)	(462,421)	(451,568)
Noncontrolling interest	(167,233)	(165,002)
Total Equity(Deficit)	(629,654)	(616,570)
Total Liabilities and Equity(Deficit)	$ 3,817	$ 3,984