During a tour intended to strengthen his country's role in Central American politics, Guatemalan President-elect Vinicio Cerezo proposed to Managua today the creation of a regional parliament to seek solutions to the area's crises.

In a press conference after meeting with Nicaraguan President Daniel Ortega, Cerezo also said that Guatemala will take a position of "active neutrality" in the region's conflicts.

In response to a query about what a questioner called the U.S. policy of "aggression" against Nic-aragua, Cerezo said, "We do not agree with any policy of aggression against any country in Central America."

Cerezo, a Christian Democrat elected Dec. 8, said the intent of the tour, which has included trips to Costa Rica and El Salvador, is to promote "peace" and "democratic processes." He said one proposal made during the visit was "for the creation of a permanent forum that would meet to make decisions about the region's economic and political problems."

He said the proposal had been met with "much interest" in all the countries he visited.

Ortega said the Nicaraguan government supports the idea of a "Central American or Latin American parliament."

The visit here will be followed by a trip to Honduras, aides to Cerezo said.

They said that he plans to arrive Monday in Washington, where he is to meet with U.S. officials.

Guatemala has won respect in Central America for its position of neutrality under the previous military government. The newly elected administration has said it wants to maintain neutrality while increasing the political role of Guatemala, the largest and economically most powerful country in Central America.

"The idea of the trip is to show that we have an interest in the region," a member of the delegation said today.

The Christian Democratic government follows 16 years of military rule in Guatemala. Cerezo, who won the runoff election with 68 percent of the vote, faces the difficult task of trying to make reforms and control the severe problem of human rights abuses without alienating the traditionally strong military. He also faces a severe economic crisis.

Cerezo has said that Guatemala needs $300 million in economic aid from the United States.

In a recent interview in Guatemala, he said he will not ask for military aid from the United States for at least a year.

Despite his affirmation that Guatemala will maintain a position of neutrality, analysts here said his visit to Nicaragua has stirred concern in Washington.

"There is a preoccupation in Washington about the visit; it is not being received well," a diplomat here said. "It will make it harder for the United States to resume aid to Guatemala."

In recent weeks, Nicaragua has come under strong attack from the Reagan administration, which has charged that the Sandinista government is using Cuban troops in combat and that it has supplied the M19 antigovernment guerrilla organization in Colombia with arms.

Nicaraguan officials have strongly denied the accusations.