The World War II was the time, when conflicts and tensions among countries began to be more aggressive and the undecided problem s went on the surface. Unsolved problems and undiscussed issued appeared and the leaders of the countries, taking into account the war time in most cases tried to solve the problems through the military forces. Manchuria is the province of China, which the center of quarrels for many years. In my paper I will discuss some of the issues between China and USSR. over Northeastern territory (Manchuria) during 1944-1946. During these years public opinion was particularly shocked over the provisions of the Yalta Agreement, which restored to the Soviet Union the same sort of special rights and privileges that the young Soviet Government had renounced shortly after the October Revolution. Expressions of anger erupted in the Chinese press over the readiness of the U.S. and Great Britain to give in to Russian demands that violated China’s territorial integrity. The core issue for the quarrel was the territory of Manchuria, the North-East of China. Being the historical territory of China, it was also the industrial center of it, which supported the country with agricultural and industrial products. China had lost a lot in the war, and the Manchuria territory was a great support for it in general. Considering the importance of the Manchuria territory for China, it may be noticed: During 1944-45 it produced 8.5 times more pig iron than had ever been produced in single year in china proper, 2.5 times more electric power, and 8.5 times more cement. Manchuria in 1944 also harvested 3,549,000 tons of soybeans; if that amount had been available to Nationalist China in the postwar period, it would have generated annually through exports some US $60 million to $90 million in foreign exchange. And Manchuria’s 144 lumber mills would largely have eliminated the need for imports of foreign lumber. 1 So, from the information, which was given, it is perfectly seen that the Manchuria area is an important economic area, which brings a great deal of advantages and powers to the country, which possesses it. The conflicts began in 1930s, when Japan wanted to provide its influence on the Manchuria area. The intentions of Japan were visible, the territory is rich in natural resources and to occupy it, Japanese government had to use it in its needs during the war with China. Being the strategically important area, China did not want to pass Manchuria to Japan without war, and the conflict appeared, the result of which was Japan occupation of the desired territory of Manchuria. In 1944-1945 the war conclusion was already predictable and the main question was the postwar period and the reparations, which had to be provided by the loosing part. Great Britain, The USA and the USSR were the most powerful countries, which had to decide the completed outcome of the war. Having come to the agreement, the Yalta Agreement of February 11, 1945 was signed. All the countries followed their own interests, and tried to implement them in the agreement. The main act, which was supported by all sides, was the entrance of the war by the USSR with Japan. In accordance with the Yalta Agreement of February 11, 1945, the USSR entered the war against Japan on August 9, 1945. It was significant