Abstract: 【Objective】 in order to construct a reasonable drip irrigation system in solar greenhouse，the effects of irrigation frequency and irrigation amount on root soil water distribution and growth of cucumber were studied. 【Method】 the field experiment was conducted on Cucumber Variety Huangru No.4 under drip irrigation with three irrigation frequencies of 1 d （D₁），3 d （D₂） and 5 d （D₃） and three irrigation amounts of W₁ （150 m³/667 m²），W₂ （200 m³/667 m²） and W₃ （250 m³/667 m²） under drip irrigation conditions. The growth indexes of cucumber were observed during the growth period. 【Result】 during the whole growth period，the water consumption of cucumber showed the law of less in the initial stage，larger in the full stage and less in the last stage；the plant height，leaf area，fruitdry matter and yield of cucumber increased with the increase of irrigation amount，and decreased with the increase of irrigation frequency. The yield of cucumber reached the maximum under D₃W₃ treatment，which was 11 380.1 kg/667 m² The increase of irrigation amount first increased and then decreased，and gradually decreased with the increase of irrigation frequency，reaching the highest at D₃W₁，which was 67.21 kg/m^-3. Except soluble solids，Fruit length，Fruitdiameter ，the quality of cucumber increased first and then decreased with the increase of irrigation amount，and reached the maximum under reclaimed water irrigation. 【Conclusion】 Based on principal component analysis，D₃W₂ （5 d，200 m³/667 m²） had the highest score，which showed high yield and quality，and high water use efficiency，which was the best drip irrigation frequency and irrigation amount.