A test apparatus for member wettability research, comprising: a container, wherein an adhesive placing cavity configured to hold an adhesive is provided inside the container; a positioning member, configured to position a tested member at the adhesive placing cavity of the container, so that a part of the tested member is placed in the adhesive; an adhesive heating member, arranged inside or outside the adhesive placing cavity and configured to heat the adhesive; an adhesive temperature sensor, configured to measure a temperature of the adhesive inside the adhesive placing cavity; a collecting member, configured to acquire information of a meniscus formed between the tested member and the adhesive; and a controller, configured to control operation of the adhesive heating member to cause the adhesive to be at different temperatures, calculate, according to the acquired information of the meniscus at the different temperatures, corresponding contact angles between the tested member and the adhesive, and acquire a temperature of the adhesive corresponding to a smallest contact angle, characterized by further comprising a member heater and a member temperature sensor, wherein: the member heater is arranged inside the tested member and configured to heat a covered surface of the tested member; the member temperature sensor is configured to measure a surface temperature of the tested member in contact with the adhesive; and the controller is further configured to control operation of the member heater to cause the tested member to be at different temperatures, acquires the information of the meniscus for different temperature gradients of a bonding layer between the tested member and the adhesive, calculates corresponding contact angles according to the information of the meniscus, and acquires a temperature of the tested member and the temperature of the adhesive corresponding to the smallest contact angle. a container, wherein an adhesive placing cavity configured to hold an adhesive is provided inside the container; a positioning member, configured to position a tested member at the adhesive placing cavity of the container, so that a part of the tested member is placed in the adhesive; an adhesive heating member, arranged inside or outside the adhesive placing cavity and configured to heat the adhesive; an adhesive temperature sensor, configured to measure a temperature of the adhesive inside the adhesive placing cavity; a collecting member, configured to acquire information of a meniscus formed between the tested member and the adhesive; and a controller, configured to control operation of the adhesive heating member to cause the adhesive to be at different temperatures, calculate, according to the acquired information of the meniscus at the different temperatures, corresponding contact angles between the tested member and the adhesive, and acquire a temperature of the adhesive corresponding to a smallest contact angle, characterized by further comprising a member heater and a member temperature sensor, wherein: the member heater is arranged inside the tested member and configured to heat a covered surface of the tested member; the member temperature sensor is configured to measure a surface temperature of the tested member in contact with the adhesive; and the controller is further configured to control operation of the member heater to cause the tested member to be at different temperatures, acquires the information of the meniscus for different temperature gradients of a bonding layer between the tested member and the adhesive, calculates corresponding contact angles according to the information of the meniscus, and acquires a temperature of the tested member and the temperature of the adhesive corresponding to the smallest contact angle. the member heater is arranged inside the tested member and configured to heat a covered surface of the tested member; the member temperature sensor is configured to measure a surface temperature of the tested member in contact with the adhesive; and the controller is further configured to control operation of the member heater to cause the tested member to be at different temperatures, acquires the information of the meniscus for different temperature gradients of a bonding layer between the tested member and the adhesive, calculates corresponding contact angles according to the information of the meniscus, and acquires a temperature of the tested member and the temperature of the adhesive corresponding to the smallest contact angle.