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This study aims to determine the effect of compost and biochar and their interactions on the growth and yield of red chili plants. This study used a randomized block design (RBD) with a factorial pattern, which consisted of two factors: compost (0, 10, 20, and 30 tons ha-1) and the type of biochar (bamboo and coconut shell). The results showed that the interaction between compost and biochar did not have a significant effect on all observed variables. The dosage of compost has significant effect on fruit length, fresh fruit weight, and fresh weight of roots. The biochar treatment has no significant effect on all observed variables except for the number of fruits that have a significant effect. The treatment at different dosage levels was not significant, but the compost dose of 30 tons ha-1 tended to produce the highest fresh fruit weight 185.35 g which increased by 20.94% compared to the lowest yield without compost 153.26 g. The treatment of this type of biochar only had a significant effect on the number of chili fruit, namely coconut shell biochar which gave the highest value of 17.17 chilies and was significantly different from bamboo-based biochar which produced 15.00 chilies.