MIYAZAKI, Japan - Foreign ministers meeting here put President Bill Clinton on notice Thursday that the national missile defense system he is pondering will not be welcomed by key allies.

Meeting in advance of Mr. Clinton's trip to Okinawa next week for a Group of Eight summit meeting of major industrial countries, the foreign ministers signaled that the president would find little sympathy at that meeting for American pursuit of an anti-missile program.

The ministers adopted a statement saying they are ''deeply concerned'' about missile proliferation, which many maintain would be the domino result of a new U.S. missile defense effort. And they urged ''preserving and strengthening'' the Anti-Ballistic Missile Treaty ''as a cornerstone of strategic stability.'' The Russian position is that the American system will violate the treaty.

''There are so many other ways we could be pursuing stability,'' the Foreign Minister Lloyd Axworthy of Canada said after the meeting. ''We have expressed very strong concerns that any movement of the National Missile Defense that abrogates the ABM Treaty would be wrong. We don't like anything that would further expand acceleration of missile capacity.''

Mr. Clinton has said he will decide soon whether to go ahead with development of the National Missile Defense system. He is expected to discuss the issue with President Vladimir Putin of Russia in Okinawa next week.

The G-8 foreign ministers, meeting here to prepare for the July 21-23 Okinawa summit meeting, did not name the U.S. project in their final communiqué. But in remarks to journalists afterward, several made clear their countries' wariness of the American program.

''All those who voiced their concerns to the Americans have stressed the need not to be disproportionate between the threat and the destabilizing possibilities'' of a defense program, Foreign Minister Hubert Vedrine of France said.

The foreign ministers acknowledged that the issue would be largely left to the Clinton-Putin meetings next week. But the U.S. position was not helped by the absence of Secretary of State Madeleine Albright, who skipped this conference, to the consternation of the Japanese, to help with the Palestinian-Israeli negotiations at Camp David.

Her stand-in, Deputy Secretary of State Strobe Talbott, sought to keep a low profile. At a final news conference Thursday, he said Mr. Clinton would consider the views of U.S. allies in making his decision.

The foreign ministers did agree on a proposal to be adopted at Okinawa to help resolve conflicts.

The proposal calls for curbs on small-arms purchases, consideration of how to block the sale of ''blood diamonds'' mined in Africa and sold to finance fighting, increased training for civilian police sent by other countries into hot spots like East Timor, and a condemnation of the use of children as soldiers.

The foreign and finance ministers of the G-8 members, which include Japan, Canada, Italy, the United States, Britain, Russia, Germany and France, are meeting separately before the heads of state convene in Okinawa.

The conference in this southern Japanese resort elicited an extraordinary effort by Japan to prove its preparedness for the summit meeting. More than 5,000 police were mobilized, coast guard gunboats patrolled the coast, and thousands of volunteer guides and hotel staff stood at attention throughout the two-day meeting.

Representatives of developing nations in the Southern Hemisphere showed up to appeal for debt relief from the participants.

''We were pleasantly surprised'' by the reception to their request, said Nkosazana Zuma, foreign minister of South Africa. ''Clearly, it's in their own benefit that they are not the only rich nations. At the end of the day, they will have no market, and no one to sell their goods to'' if poverty grips developing countries, she said.

In their nine-page final statement, the foreign ministers also welcomed the recent summit meeting between South Korea and North Korea and encouraged Pyongyang's recent moves toward greater diplomatic openness.

The ministers said they were ''deeply concerned at the level of tension between India and Pakistan.'' They praised democratic advances in Indonesia and Iran and encouraged the Middle East peace process.