Aromatic plants like celery and basil contain essential oils that able to repel the pests. Therefore, these aromatic plants can be used in intercropping system to control pests of the main crop. The aim of the research was to know how far celery and basil in intercropping with hot pepper in reducing thrips and aphid infestation on hot pepper. The activity was carried out in Margahayu Research Garden (1,250 m asl.), Indonesian Vegetable Research Institute at Lembang. The experiment was arranged in a randomized block design with split plot pattern and each combination treatment was replicated four times. The main plot was planting system (A): (a1) hot pepper intercropped with celery, (a2) hot pepper intercropped with basil, and (a3) hot pepper monoculture. The sub plot was insecticide spraying (B): (b1) spray with insecticide 2x/week and (b2) without insecticide spraying. Results showed that: (1) in intercropping system with hot pepper, celery and basil were able to reduce thrips population by 35.84% and 34.76% respectively, and were able to reduce aphid population by 44% and 50,25% respectively; (2) use of celery and basil compared with insecticide showed a better suppression on thrips and aphid population, so that the use of these aromatic plants was able to reduce insecticide spraying by 100%; and (3) use of celery and basil was able to increase the hot pepper yield by 61.89% and 65.04% respectively.