The drying characteristics of beetroot slices were investigated by solar drying method of 4 mm thickness beetroot slices, beetroot slices dried from 611.019% (d.b) moisture content 6.095% (d.b) in the solar dryer in 33 hr. Eight drying models i.e. Newton model, Page model, Henderson and Pabis, Exponential, Modified page, Thompson, Logarithmic, Modified page equation II etc. were fitted to the experimental data on moisture ratio with respect to time. Henderson and Pabis drying model best fitted with r2 = 0.9914; RMSE = 0.00038 and χ2 = 0.0301 to experimental moisture ratio with respect to time. Effective Diffusivity (Deff) at time (t) for Beetroot slices drying by Solar drying was 2.53154 × 10-8 m2/s. Variation in ambient air temperature ranging from 29.5 and 51.0°C, product temperature ranging between 19.4 to 49.56°C and humidity ranging between 35 to 60 %. Effect of quality parameters i.e. acidity, TSS, pH, reducing sugar, total sugar, moisture, hardness, and color (L, a and b value) on fresh beetroot slices and dried beetroot slices after drying at solar drying were determined and discussed at p≤0.05. Total soluble solid of fresh beetroot slices was 10 ± 2.00°B and solar drying total soluble solid content beetroot slices was 57.33 ± 0.58°B, the pH of beetroot slices before drying was 7.27±0.24 and then after solar drying pH of beetroot slices was 6.57 ± 0.15. The titratable acidity of the beetroot slices before drying was 0.31 ± 0.21% and it increases upto 1.28 ± 0.13%, the reducing sugar content of beetroot slices before drying was 0.29 ± 0.03% and then after solar drying reducing sugar content of beetroot slices was 2.93 ± 0.23%, the total sugar content of beetroot slices before drying was 18.80 ± 0.56% and then after solar drying total sugar content of beetroot slices was 41.48 ± 1.08%. The L, a, b value of beetroot slices before drying was 33.69 ± 0.12, 31.50 ± 0.85 and 9.10 ± 0.16 respectively, then after solar drying L, a, b value of beetroot slices was 26.108 ± 0.12, 28.78 ± 0.12 and 13.636 ± 0.06 respectively.