To explore the exposure situation of organochlorine pesticides （OCPs） in the coral reef area of Weizhou Island， Guangxi， gas chromatography-tandem triple quadrupole mass spectrometry （GC-MS/MS） was used to study the pollution levels， sources， and bioaccumulation characteristics of seven kinds of OCPs in seawater， sediments， coral host （i.e.， coral polyp hosts） tissues， and Symbiodinium in the coral reef areas in the northwest， southwest， and east directions around Weizhou Island. The results showed that OCPs were commonly present in the seawater of the coral reef area of Weizhou Island. DDTs were the main components among OCPs. The concentration of ∑₇OCPs in seawater was（119±118） pg/L， and the concentration of ∑₆DDTs was（84.1±82.3） pg/L. The concentrations of ∑₇OCPs in sediments， coral host tissues， and zooxanthellae were（0.27±0.22） ng/g dry weight， （1.90 ± 2.04） ng/g dry weight， and（17.7±7.29） ng/g dry weight， respectively. The average values of lg BAFs of the seven target OCPs in coral host tissues and Symbiodinium were 2.04-3.44 and 2.25-4.06， indicating that Symbiodinium had a stronger enrichment ability for OCPs than coral hosts. Whether this higher enrichment ability will bring higher ecological risks is worthy of in-depth study. The results of ecological risk assessment showed that the ecological risks of the seven target OCPs in the sediments and seawater of the coral reef area of Weizhou Island were currently at a relatively low level. The results of source apportionment showed that historical residues were the main sources of DDTs in the coral reef area of Weizhou Island， mainly dominated by dicofol products.