Abstract: It is an important requirement to prevent and remedy the cropland pollution for the sustainable development of agriculture, the safety of agro-products, and the security of ecological environment in China. The CPC shows the tendency of increase of pollutants, expansion and complication of deterioration, so as to augment the difficulty of its prevention and cure. The CPC shows both the totally deterioration and partially improvement, and it is more and more difficult to change and prevent the worsening overall situation of CPC, though it may be controlled. The pollution is quite different from region to region, from cropland to cropland and from sector to sector, so that we should not apply the conclusion from a case to the whole region or all Chinese farmland. Fertilizer and pesticides have both the positive and negative effects on farmlands and crop production, they should be estimated impersonally and utilized efficiently. Under the basis of analysis on seven typical thoughts of prevention and cure and aiming at the weakness in the prevention and cure of CPC, a strategical thought is put forward, in which the way of prevention and control with tri-dimension style, and the objective both with a good control of CPC and the benefit increase from farmlands at the same time, is proposed in the study.