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In order to explore the new monitoring sampling technology suitable for the situation of forest resources in China, based on the annual monitoring technology of forest resources in the United States, the annual monitoring of forest volume was researched in Yanqing District, Beijing. Firstly, according to the actual situation of forest resource distribution in research area and based on the design of American annual monitoring system of forest resources, some optimization and improvement in the size of hexagonal sampling frame and sampling rate were done, and a system sampling scheme for annual forest inventory monitoring was designed. The result showed that using the positive hexagonal sampling frame to do annual monitoring of forest resources can receive an optimal scale area, an optimal side length and an optimal sampling fraction, and the amount was 2338hm2, 3000m and 66%, respectively. According to the systematic sampling scheme, and combining with field investigation, the volume amount received in Yanqing was 16.6m3/hm2, the sampling monitoring accuracy was 85.4%, which was all conformity with NFI Technical Regulations. Therefore, the feasibility of the proposed forest resource monitoring scheme based on cluster sampling technology in China was verified. The main points of cluster sampling technology and the method of forest accumulation amount output based on circular cluster were introduced in detail. The research result can provide reference for the optimization and improvement of the national forest resources continuous inventory system and the field sampling survey technology.