The rising use of technologies and internet in Low- and Middle-income Countries (LMICs) hints at the opportunities of utilising digital tools to bridge the significant gap in mental health care delivery. As more mental health care technologies are used in research projects and even emerged to the market of LMICs, it is critical to establish guidelines to address issues on the existing products and ensure the ethical development of future technologies. Previous guideline research was mainly established based on mental health care technologies in High-Income Countries (HICs), and scarce work has been conducted under limited-resource settings or LMICs. This paper proposes a research plan to (1) identify the factors challenging the ethical development and implementation of mental health care technologies in a representative middle-income country with high inequality, China, and (2) translate the findings into development guidelines to empower future mental health care technologies in China and other LMICs.