Owing to the accumulation of sediment in shallow seas caused by human activities, the coverage area of copper algae fields has been progressively diminishing, resulting in a continuous reduction of benthic habitats. To mitigate this issue, it is imperative to restore the degraded copper algae fields and establish suitable habitats. This entails addressing the problem of sediment accumulation, which is further complicated by the reduced adhesion capability of Sargassum?horneri zygotes and their diminished survival rates. Based on the adhesive function of zygotes of macroalgae, in order to improve the efficiency of zygotes adhesion and transplantation, the hydrodynamic action impact experiments were carried out indoors and in intertidal?zone. The?adhesion?ability?of?Sargassum?horneri zygotes?encapsulated?by?sodium?alginate,?sodium alginate with 3%CaCl2 solution and Hyperhyperbolic Polymer Aradhesuve(HBPA)?was?studied. The result showed that: (1)Indoors zone: under the influence?of hydrodynamic action(EI:3.9),?sodium?alginate?adhesive?could?adhere? for?5?days?on?average,?and?the?average?adhesion?time?increased?for?2?days?after?spraying?3%CaCl2?solution,?and?theattachment density of zygotes was 14ind./cm2 and 24ind./cm2 respectively.?HBPA?can?adhere?for more?than?7?days? in hydrodynamic action(EI:8.4). The?highes attachment density of zygotes is?14ind./cm2.?(2)Intertidal?zone:?HBPA? showed?strong?adhesion?ability?in?three?sites?of?intertidal?zone?S1(EI:6.6),?S2(EI:5.0)?and?S3(EI:4.0)?to?encapsulate zygote,?and?the attachment density of zygotes?reached?1、14?and?21ind./100cm2?respectively,?which?were?higher? than?those?groups of?sodium?alginate and the sodium?alginate?sprayed?with3%?CaCl2?solution.?Through?indoor?and? outdoor?hydrodynamic action?experiments,?it?is?found?that?the?resistance?of?sodium?alginate?and?sodium?alginate additive?fixed?by?spraying 3%CaCl2 solution?are?weaker?than?that?of HBPA,?so?it?cannot?be?applied?under?the?co-nditions?of?strong?current?and?high?wave energy,?but?it?is?the most convenient, pollution-free, low-cost?and?easy-to-obtain?materials?as?artificial?adhesives. HBPA?has?high?viscosity,?strong?adhesion,?low?dissolution?rate?and?go-od?intertidal?transplantation?effect,?and?is?expected?to?become?a?new?underwater?transplantation?material.?The?rese-arch?results?will?provide?technical?support?for?the?ecological?restoration?and?protection?of?largescale?seaweed?field.The findings of this study will facilitate the development and application of more efficient artificial adhesion agents and transplantation techniques, thereby promoting cost-effective and efficient methods for the ecological restoration of algal fields. This will aid in restoring the damaged algal ecosystems along the coast of Zhejiang and provide essential technical support for ecological restoration projects and marine carbon sequestration efforts in coastal islands and reefs throughout China.