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China started the pilot project of subsidy on desertification land protection in 2013. It had been established that 71 national desertification regions were closed and protected, and followed up to monitor for several years in five northwest provinces, Inner Mongolia and Tibet since 2016, while the valuable research conclusion had not been stilly taken. In this paper, the related research and practice at domestic and abroad were reviewed. The four suggestions were put forward for the problem to be solved in time by discussing the closed target and theoretical carrying capacity, based on the key factors on affecting grassland vegetation, the more important issues and the effect of grazing prohibition and monitor as follow. 1) The achievement of investigation and monitor of closed sand land and grazing prohibition during the past years should be concluded in time for providing the basis for government management and improving the closed sand land and grazing prohibition scheme and the next decision-making. 2) The theoretical carrying capacity of desertification region should be determined, such as the actual safe carrying capacity by the basis of the theoretical carrying capacity. 3) In order to improve the practical value of monitoring data, the monitored plot should be compressed, and further revised the monitoring index system. 4) The monitoring research on the benefit of closed sand land and grazing prohibition should be shifted from monitoring the response of vegetation by grazing intensity in the past to monitoring the response of land desertification. [ABSTRACT FROM AUTHOR]