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Extracted This study aimed to reveal the extent to which water salinity affects basil plant growth. This research is limited to monitoring the effect of water salinity on basil plant growth in Makkah Al-Mukarramah region - Kingdom of Saudi Arabia over a month starting from 21-10-2022 until 4-11-2022 at the same time of each week. This study relied on the experimental approach by measuring the protocols of salt water and tap water (transparency - salinity - acidity - electrical conductivity - nitrates) and adding dried fruit (dried figs) as a supporting fertilizer. There were questions whether there was a relationship between plant growth and saltier water? Will the plant grow faster in (saltier water with dried figs) or (tap water) will it be faster and better? Is there a relationship between plant growth and saline water? Will the plant grow faster in (saltier water with dried figs) or (tap water) will it be faster and better? It was shown from this study that the increase in salinity in the water of Makkah Al-Mukarramah is inversely proportional to the acidity of the water and the relationship between the salinity of the water added to the soil and the growth of the basil plant is an inverse relationship, and therefore the higher the salinity of the water, the lower the growth of the rate of basil plant because the high concentrations of salt in the water harm the plant. Finally, this study recommends major studies and research on the effectiveness of using brackish water during plant irrigation. Improving the chemical and physical properties of water and finding desalination plants for groundwater wells in agricultural areas. Keywords Salt water – dried figs – basil plant – factors affecting plant growth.