Intervention time during hospitalization is the first day after chemotherapy, and intervene once per chemotherapy, a total of 4 times, 40-60 min each time. Interventions included verbal and written disclosure. The researcher will preside over the MSD process and introduce of MSD for gastric patients and their spouse，both patient and their spouse will receive a training or review on MSD skills, 5-10 minutes each time. Couples practice MSD skills through 4 revealing themes. Couples are encouraged to express their FCR, and when one partner disclosure, supporters should allow the speaker to fully express their feelings and respond positively to the speaker's message, showing empathy for them, and acknowledging their point of view.

The FoP-Q-SF is a one-dimensional scale constructed by on the basis of the Fear of Progression Questionnaire (FoP-Q). The FoP-Q-SF for Patients scale includes 12 items, using 5-point Likert Scale, 1 point means "never", 5 points means "always", with a total score ranging from 12 to 60, with higher scores indicating higher fear of disease progression.

FoP-Q-SF for Partners is developed by Zimmermann et al. (2011) based on the structure of the FoP-Q-SF scale to assess the degree of disease progression of the patient's spouse's fear of disease. FoP-Q-SF for Partners includes 12 items, adopting 5-point Likert scale, 1 point representing "never" and 5 points representing "always", with a total score ranging from 12 to 60, with higher scores indicating higher fear of their spouse's disease progression.

DCI based on the system interaction model was originally developed by Bodenmann ( 2000), which includes 6 dimensions, 55 items, and use Likert 5-point scale. After further improvement, the DCI (Bodenmann & Randall, 2012) was revised to 37 items and measured on a 5-point Likert scale, ranging from 1 (not at all/very rarely) to 5 (very often).