This experiment was carried out to investigate the effect of different nutrient solution temperatures on the growth and quality of welsh onion in winter season. The fresh weight increased with the increase of temperature within the range of 13-23$^{circ}C$. The top length was longer 18 and 23$^{circ}C$ than at 13$^{circ}C$, the dry weight was the highest at 18$^{circ}C$. The potassium content in plant was the highest at 18$^{circ}C$, calcium and magnesium contents were higher at 13 and 18$^{circ}C$ than at 23$^{circ}C$. The vitamin C content decreased with the increase of nutrient solution temperature, but there was no statistical significance within treatments. The pyruvic acid was higher at 13 and 18$^{circ}C$ than at 23$^{circ}C$, while nitrate content was lower at 13 and 18$^{circ}C$ than 23$^{circ}C$. Therefore, for growth and quality of welsh onion, it was concluded that 18$^{circ}C$ may be suitable nutrient solution temperature in winter season.