The International Olympic Committee (IOC) has stripped the three of their gold medals, won in Beijing in 2008.
They were among eight athletes sanctioned for doping - the latest to be caught under a retesting programme.
The International Weightlifting Federation (IWF) last year ruled any nations with three or more positive tests would be banned for a year.
The IOC is retesting hundreds of samples from the 2008 and 2012 Olympic Games, using new techniques to uncover cheating that went undetected at the time.
Cao Lei, 33, took gold in the women's 75kg weightlifting event at Beijing, Chen Xiexia, 34, won the women's 48kg and Liu Chunhong, 31, was successful in the women's 69kg. All will now have to return their medals.
The failed retests were uncovered last year but the sanctions - announced by the IOC on Thursday - will clear the way for the IWF to act.
The IWF issued new measures before last year's Rio Olympics to crack down on doping in the sport.
Its executive board decided "national federations confirmed to have produced three or more anti-doping rule violations in the combined re-analysis process of the 2008 and 2012 Olympic Games shall be suspended for one year".
Kazakhstan, Azerbaijan, Russia and Belarus have already been banned by the IWF.
The other five athletes to be sanctioned by the IOC are:
"The protection of clean athletes and the fight against doping are top priorities for the IOC," a spokesperson said,

It is a joint venture between Lacuna Developments, based in Holywood, County Down, and the Welsh firm Watkin Jones.
They have bought the former Willis insurance offices, close to the junction with Botanic Avenue.
The same joint venture is currently converting the former Belfast Metropolitan College building at College Square East into student flats.
It is also planning a student development at the former Athletic Stores building in the city centre.
There are currently plans for more than 4,000 student 'beds' to be developed in Belfast over the next few years.
The latest application, which was filed last week, is for more than 700 units in a development on Donegall Street.
It will form part of the bigger Northside regeneration scheme which includes a hotel, social housing and commercial space.
Most of the planned student accommodation is on the northern edge of the city centre, close to the new campus of the Ulster University.
The latest Watkin Jones/ Lacuna plan is the first private sector scheme close to Queens University, Belfast.
The scheme represents an investment of around Â£10m and the developers are aiming to deliver it by September 2017.
It will be managed by Fresh Student Living, which is involved with the other two schemes.

The 19-year-old woman was attacked between 20:30 and 21:00 on Wednesday.
Officers cordoned off an area of the park as part of their investigation, and were believed to be following a positive line of inquiry.
Anyone with information was asked to contact Police Scotland.

Former organiser The British Heart Foundation announced last week it was pulling out due to the Â£40,000 event no longer being viable.
However the council says it is "pulling out the stops" to ensure the fundraiser goes ahead as planned on 11 October.
The Save the Children charity has also announced it could "take up the baton", but only with financial support.
The council was working to reduce the cost through options such as changing the route or moving it to a completely different venue, such as Lydiard Park.
Last year, the race attracted more than 1,500 runners.
China faces a ban from international weightlifting competition after three of its athletes failed doping tests.
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A student housing developer is planning to build around 150 apartments on the Dublin Road in south Belfast.
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Police are investigating the rape of a woman in Queens Park in Glasgow's Southside.
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Swindon's half marathon could still be saved for the long-term by reducing its cost, the borough council has said.