President Reagan pressed ahead yesterday with his lobbying campaign to win congressional approval of the MX missile, calling about 30 House members to the White House in an effort to build on his two victories on Capitol Hill this week.

"I think he is gaining ground," said Rep. Duncan L. Hunter (R-Calif.), a member of the House Armed Services Committee. He added that Reagan had helped create "a new spirit in Congress" by pledging support for arms control and by taking a bipartisan approach in lobbying for the MX intercontinental ballistic missile.

"I plan to vote for the MX, as do many Democrats," said Rep. Carroll Hubbard Jr. (D-Ky.), who joined in a December vote to deny Reagan funding for the missile.

The Senate Appropriations Committee voted 17 to 11 this week to approve $625 million for the MX--$560 million for engineering and $65 million for flight testing. A House Appropriations subcommittee earlier gave the green light to MX funding. The votes followed letters from the president addressing congressional concerns about his commitment to arms control.

The issue now goes to the House Appropriations Committee and to the Senate floor.

White House spokesman Larry Speakes said yesterday that "there are still hurdles to cross" and "the going gets tougher."

Speakes also announced that Reagan met with the president's Intelligence Oversight Board, created in February, 1976, by President Ford in response to a recommendation by the Rockefeller Commission, which probed charges of domestic spying by the CIA.

Speakes said that the board reported to Reagan that the intelligence community has not violated the Constitution or other U.S. laws in the last year. He also said the report covered activities in Central America.

The three-member board is chaired by W. Glenn Campbell, director of the Hoover Institute at Stanford University.

The announcement about the intelligence board was unusual; the White House normally does not volunteer information about intelligence activities.

The president also met yesterday with AFL-CIO President Lane Kirkland and representatives of international unions to receive labor's recommendations for the economic summit in Williamsburg, Va., at the end of the month.

In another development, Reagan announced that he is nominating Delbert Spurlock Jr., 42, general counsel of the Army, to be assistant Army secretary for manpower. Spurlock, who is black, has been general counsel since 1980 and previously was a lawyer in Sacramento.

Speakes also said yesterday that Reagan "will neglect no voter in this country." He made his statement in response to a report in The Washington Post quoting some black appointees in the administration as saying that the White House has written off blacks politically for 1984.

He said that as of January, 150 "top executive, policy-making positions" in the administration were held by blacks and that more than 100 Hispanics were in "high-level positions."