There are nine Necroscia species recognized in China, among which N. inflata (Redtenbacher) and N. marginata (Gray) are reported for the first time from China. One new synonym is discovered: N. maculata (Chen & He) is regarded as a junior synonym of N. multicolor (Redtenbacher) n. syn. First description is given for the female and egg of N. hainanensis (Chen & He) n. comb., which is transferred from Sosibia Stål. A list and key to all Chinese species are given.