Abstract: The activity and the concentration of natural radionuclides of three elements (⁴⁰K, ²³⁸U and ²³²TH) were determined in 10 soil samples, collected from the village of Almanfahan in Alhindia District. They were studied and then evaluated. The standard sources of ⁴⁰K,²³⁸U and ²³²TH are used for calibration of radiation activity by gamma spectrometer NaI (TI). The radioactivity of natural isotopes ⁴⁰K, ²³⁸U and ²³²TH has been estimated. The results showed the radio activities of element in this study were within the acceptable standard levels. In addition, the radium equivalent activity, average air volume, annual effective dose rate and external risk index were assessed and found to be among the internationally tolerable values. The radioactivity of nuclides of ⁴⁰K, ²³⁸U and ²³²TH in Al-Manfahan village at Alhindia District were calculated. The radioactivity of ²³⁸U ranged from 8.59"44-347.69"616 Bq/kg with an average of 49.68"108 Bq/kg while It was for ²³²TH ranged from 6.01"167-87.44"41 Bq/kg with an average of 55.06"58.1 Bq/kg and ⁴⁰K ranged from 95.09"393-357.68"178 Bq/kg with an average of197.91"183.8 Bq/kg with an also, it is found that the average of radiological effects like the Radium equivalent (Ra_eq), the absorbed Dose rate (Dr), External Hazard Index (H_ex), Internal Hazard Index (H_in), representative gamma hazard Index (Iγ), the total Annual Effective Dose Equivalent (AEDE) and Lifetime the Excess Cancer Risk (ELCR) due to natural radioactivity in soil samples for textile plant were 143.65"5.7 Bq/kg and 65.399"2.5 nGy/h and 0.388"0.03 and 0.568"0.04, 1.0137"0.05, 0.320"0.02, 0.080"0.03 mSv/y, 0.401"0.04, 1.403H10³"0.03, respectively which was attributed to increasing the natural radioactivity in the soil of Al-Manfahan village in the center of the province of Al Hindai.