Pod and seed traits are important agronomy traits, which are closely related to yield in cultivated peanut (Arachis hypogaea L.). In the present study, to identify molecular markers closely linked to pod and seed traits, a RIL8 population with 315 families was developed that derived from Jihua 5 with large pod and M130 with small pod of US germplasm. A genetic linkage map containing 363 polymorphic loci was constructed using SSR, AhTE, SRAP, and TRAP markers. All polymorphic loci were mapped on 21 linkage groups, which spanned 1360.38 cM with an average distance of 3.75 cM. Subsequently, a total of 97 QTLs for pod and seed traits were identified by ICIM method at five environments from 2017 to 2018, explaining the phenotypic variations of 2.36%-12.15%, and located on A02, A05, A08, A09, B02, B03, B04, B08, and B09 chromosomes. Among them, nine QTLs were detected for pod length, 13 QTLs for pod width, 14 QTLs for pod thickness, 11 QTLs for seed length, 13 QTLs for seed width, 13 QTLs for hundred-pod weight, 10 QTLs for hundred-seed weight. Four QTLs with major effect were detected, including qPWA08.1, qPTA08.3, qPTA08.4, and qSWB08.5, which explained the phenotypic variations of 10.02%-12.15%. Furthermore, 45 stable QTLs were repeatedly detected in more than three environments. QTL clusters were detected on A02, A08, B02, B04, and B08 chromosomes, respectively. In addition, 15 epistatic QTLs were identified that explaining phenotypic variation of 10.23%-51.84%. These results will provide an important theoretical basis for molecular marker-assisted breeding of pod and seed traits in peanut.