The foreign delegates talked to many Rohingya refugees and inspected the progress of the health services initiated by the International Organisation for Migration (IOM).
"The worldwide community should not complicate the situation", Mr Wang said in a press briefing on Saturday at the Chinese Embassy in Dhaka.
China has offered to help Bangladesh and Myanmar resolve the Rohingya crisis, a move Chinese analysts said reflected Beijing's more proactive and conciliatory tack on regional affairs.
Mr Wang arrived in Bangladesh on Saturday for a two-day visit and from there, he will go to Myanmar to attend the Asia-Europe Meeting.
China has proposed building an economic corridor with Myanmar to further enhance bilateral pragmatic cooperation, Chinese Foreign Minister Wang Yi said here Sunday.
More than 600,000 Rohingya Muslims have fled Rakhine for neighbouring Bangladesh since late August, when the military launched what it called "clearance operations" in response to insurgent attacks.
"It is a complex situation and needs a comprehensive solution".
Sigmar Gabriel German foreign minister talks to refugees
They also highly appreciated Prime Minister Sheikh Hasina for her great humanitarian gesture of sheltering tens of thousands of forcibly displaced Rohingyas in Bangladesh.
The campaign has been described by the United Nations as "ethnic cleansing" and drawn widespread outrage from the global community.
The prime minister said Myanmar should take their citizens back and ensure their security and rehabilitation.
Foreign Minister AH Mahmood Ali, its State Minister M Shahriar Alam and Foreign Secretary Shahidul Haque and others also accompanied them.
The US delegation lauded the prime minister and Bangladesh for accepting the huge number of forcibly evicted Myanmar people and giving them food and shelter, saying more global efforts were needed in this regard.
Arriving in Myanmar's capital Naypyidaw on Sunday after a stop in Bangladesh, Chinese Foreign Minister Wang Yi also said the global community must help fight poverty and promote development in Myanmar's Rakhine State.
European Union foreign policy chief Federica Mogherini, who toured the refugee camps along Bangladesh's border with Myanmar with the foreign ministers of Bangladesh, Japan, Sweden and Germany, said she would discuss ways to end the Rohingya crisis with Suu Kyi when they met in Yangon.