The judicial personnel, electronic technical expert, organ identifying and authenticating electronic evidence and defense attorney could obtain evidence according to relevant rule, search and attachment rule and reliability rule. 取证主体应当包括司法人员、电子技术专家和电子司法取证鉴定认证机构以及辩护律师。取证规则包括关联性规则、搜查扣押规则和可靠性规则。