East Germany took the lead in both the men's and women's divisions after the first day of the sixth European Track and Field Cup final at the Olympic Stadium today.

The East German men collected 60 points after the first 10 events and held a six-point lead over West Germany. Britain was a suprising third at 47, one point ahead of the Soviet Union.

Led by record-setting Karin Rossley, East Germany took a nine-point advantage over the Soviet Union halfway through the women's meet. The East German women totaled 55 points after seven events. The Soviets had 46 and Britain was third at 31.

Poland held fifth place among the men at 40 points followed by France, 35; Finland, 31, and Italy, 30.

Rossley, 20, set a world record in the 400-meter hurdles with a time of 55.63, clipping 11 hundredths of a second from the mark set June 26 by the Soviet Union's Tatjana Storozheva, second today in 56.84 Seconds.

Rolf Beilschmidt of East Germany won the high jump at 7 feet 7 inches and came close in three attempts at a world-record 7-8 1/4. Soviet Vladimir Yashenko, who holds the world mark of 7-7 3/4, did not compete here, instead concentrating on the European Junior Championships.

Eugen Ray, 20-year-old East German, whipped Italy's Pietro Mennea and Soviet Valeri Borzov in winning the 100 meters in 10.12 seconds. Olympic champion Udo Beyer of East Germany won the shot put at 71 feet 1 3/8 inches, best performance in the world this year.

West Germany's Karl-Hans Riehm took the hammer throw with a toss of 249 feet as Soviet Olympic champion Yuri Syedikh placed third. Britain's Steve Ovett captured the 1,500 meters in 3:44.94 and East Germany's Marlies Oelsner won the women's 100 meters in 11.07.