“Indoor Survey” on Kuandian Manchu Autonomous County finds that the employment of rural surplus labor in the cities raises the income level of rural households to some extent, however, current rural surplus labor transfer has four kinds of driving forces in positive and negative two directions, i.e., the rural areas not only have the “propelling force” to push the rural surplus labor to the cities but also have the “driving force” to pull the migrant workers back to the rural areas, furthermore, the cities not only have the “driving force” to attract the peasants to work in the cities but also have the “propelling force” to push the migrant workers back to the rural areas. It is under the comprehensive action by “the propelling force” and “the driving force” that a part of the peasants choose half-worker-half-peasant model by “working in the cities but keeping their ID in the rural areas” or by “alternatively working in the cities or working in the rural areas”. Thus, small city construction is of important significance to “keeping” the rural labor in the rural areas by developing rural economy to mitigate the employment pressure in the cities and to help the peasants to choose their own production and living methods so as to realize diversified and gradually ordered transfer of the rural surplus labor.