Subsurface drainage is important to drain out excess waters and salts from low-lying waterlogged areas. In such a system, a web of porous tile pipes is buried in the soil to collect excess water from the soil and drain it out into drainage canals. Draining water from the production area under plastic houses and net houses would help farmers to solve the problem of highly saturated soil and can continue their production during the wet season. A study was conducted to ensure the on-farm impact of subsurface drainage system on the yield, soil properties, and economics of Chinese cabbage (Brassica Pekinensis L. Rupr.) production in the rainy season at Svay Rieng Province, Cambodia. The on-farm experiment was conducted with farmers in Svay Chrum District, Svay Rieng Province, Cambodia. The treatments consisted of three subsurface drainage (SD) systems under three growing conditions (GC) including open field (OF), net house (NH), and plastic house (PH) with five replications of 45 total plots. The results of the experiment revealed positive improvement in terms of the yield of the Chinese cabbage at a rate of 15% and 22% for SD2 and SD3 systems respectively; and 58% and 66% for NH and PH conditions respectively. Although, the results also showed that the change of soil chemical properties of soil samples analysis from pre and post subsurface drainage installation have indicated a slightly significant increase at a value of soil WHC: 6.04% and 6.23% for SD2 and SD3 systems; with WHC: 4.88% and 4.97% for NH and PH conditions respectively. On the contrary, the results from the soil samples have revealed the slightly decrease of chemical properties at a value of soil pH: 0.32 and 0.56, EC: 27.73 us/cm and 31.18 us/cm, CEC: 0.13 meq/100g and 0.17 meq/100g, available N: 0.32 mg/kg and 0.56 mg/kg, available P: 0.13 mg/kg and 0.14 mg/kg, and exchange K: 0.0055 mg/kg and 0.0060 mg/kg for SD2 and SD3 systems; with pH: 0.32 and 0.50, EC: 22.71 us/cm and 20.38 us/cm, CEC: 0.14 meq/100g and 0.11 meq/100g, available N: 0.32 mg/kg and 0.50 mg/kg, available P: 0.12 mg/kg and 0.118 mg/kg, and exchange K: 0.0042 mg/kg and 0.0039 mg/kg for NH and PH conditions respectively. The soil chemical properties could be interpreted at least the loss of N: 0.77 kg/ha and 1.34 kg/ha, P: 0.31 kg/ha and 0.34 kg/ha, and K: 0.013 kg/ha and 0.014 kg/ha for SD2 and SD3 systems; with N: 0.77 kg/ha and 1.20 kg/ha, P: 0.29 kg/ha and 0.28 kg/ha, and K: 0.010 kg/ha and 0.009 kg/ha for NH and PH conditions from the soil content respectively. Anyways, the economics analysis results still presented the positive improvement on net profits of the Chinese cabbage production at a rate of OF: 13.35% and 29.19%, NH: 28.48% and 48.09%, and PH: 27.51% and 40.82% for SD2 and SD3 systems in comparing with SD1 respectively. In the meanwhile, the increase of return on investment (ROI) of the Chinese cabbage production at a rate of OF: 6.38% and 20.31%, NH: 40.81% and 69.16%, and PH: 51.47% and 75.59%; with the increase of economic efficiency (EF) of the Chinese cabbage production at a rate of OF: 2.79% and 8.87%, NH: 15.36% and 26.04%, and PH: 16.30% and 23.94% for SD2 and SD3 systems were also improved in comparing with SD1 respectively. Consequently, the results suggest that the subsurface drainage systems provided a great benefit contribution to vegetable producers at the saturated fields in terms of a production period that can be extended from intermittent to year-round. The increasing and decreasing values of soil chemical properties in the soil content were slightly back and forth which would be uncountable to take into the account. However, the economics benefits of the subsurface drainage system indicated the high enormous profits, return on investment, and economics efficiency for vegetable producers. Thus, the vegetable producers should be recommended to grow their vegetables under the net house (NH) or plastic house (PH) to increase the productivity with more potential output price at rainy season to generate their daily incomes and livelihood.